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- Discipline
- Keyword
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- Genetic diversity (3)
- Flowering (2)
- Grain yield (2)
- Rice (2)
- SSR (2)
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- 2AP—2-acetyl-1-pyrroline (1)
- Agusan (1)
- Anubias barteri (1)
- Aquatic plant (1)
- Asian corn borer (1)
- BADH2—betaine aldehyde dehydrogenase 2 (1)
- Bioassay (1)
- Bioguma (1)
- Biomass application (1)
- Breeding (1)
- Breeding values (1)
- Bt corn (1)
- Bt maize (1)
- Butuan soil series (1)
- Callus culture (1)
- Camelina sativa (L.) Crantz (1)
- Citrus reticulata (1)
- Continuous flooding (1)
- Corn (1)
- Corn germplasm conservation (1)
- Cotton (1)
- Crop (1)
- Crop management (1)
- Cry1Ab protein (1)
- Defense (1)
Articles 1 - 23 of 23
Full-Text Articles in Plant Breeding and Genetics
Establishing An Elite Core Panel For Accelerating Genetic Gain In The Philrice Irrigated Rice Breeding Program, Leonilo V. Gramaje, Frodie P. Waing, Raysha Ann Marie Garcia, Nia N. Manlulu, Rogemae C. Ravela, Alvin D. Palanog, Oliver E. Manangkil, Holden Verdeprado, Rose Imee Zhella Amar-Morante, Norvie L. Manigbas, Pompe C. Sta Cruz, Suresh Babu Kadaru, Parthiban Thathapalli Prakash, Jose E. Hernandez
Establishing An Elite Core Panel For Accelerating Genetic Gain In The Philrice Irrigated Rice Breeding Program, Leonilo V. Gramaje, Frodie P. Waing, Raysha Ann Marie Garcia, Nia N. Manlulu, Rogemae C. Ravela, Alvin D. Palanog, Oliver E. Manangkil, Holden Verdeprado, Rose Imee Zhella Amar-Morante, Norvie L. Manigbas, Pompe C. Sta Cruz, Suresh Babu Kadaru, Parthiban Thathapalli Prakash, Jose E. Hernandez
The Philippine Agricultural Scientist
Increasing the performance of rice varieties in terms of yield and other economically significant traits through genetic improvement is crucial to achieving food security in the Philippines. The Department of Agriculture– Philippine Rice Research Institute (PhilRice) plays a central role in developing high-yielding rice varieties that are more adaptable to local conditions to meet national rice demand. This study determined the trend in genetic gain for yield among national test entries from 2015 through 2021 using historical data and evaluated key agronomic, grain quality, and pest- and disease-resistance traits as criteria for assembling an elite core panel. Historical yield data …
Characterization Of Syntaxin 18 In Peregrinus Maidis And In Vitro Dsrna Synthesis For Potential Rnai-Mediated Control Of Maize Mosaic Alphanucleorhabdovirus (Mmv) Transmission, Hannah Corinne T. Cantaros, Charlene Niebres, Ruth Alessandra Banasihan, Argel L. Arenas, Karen B. Alviar
Characterization Of Syntaxin 18 In Peregrinus Maidis And In Vitro Dsrna Synthesis For Potential Rnai-Mediated Control Of Maize Mosaic Alphanucleorhabdovirus (Mmv) Transmission, Hannah Corinne T. Cantaros, Charlene Niebres, Ruth Alessandra Banasihan, Argel L. Arenas, Karen B. Alviar
The Philippine Agricultural Scientist
The plant virus known as Maize mosaic alphanucleorhabdovirus (MMV) is a persistent, propagative pathogen transmitted by the corn planthopper Peregrinus maidis Ashmead (Hemiptera: Delphacidae). It is the causal agent for a mosaic disease that can cause significant loss in corn yield. Currently, disease management is focused on controlling its insect vector population. The molecular mechanisms of virus transmission by the insect vector are not yet fully understood. Previously, P. maidis syntaxin 18 (PmSTX18) was identified as a receptor for MMV. PmSTX18 interacts with the viral glycoprotein and potentially facilitates MMV recognition and entry into the vector, enabling virus …
Genetic And Geographic Profiling Of Fragrance-Associated Badh2 Mutations In Rice From China, Laos, And Vietnam, Lenie A. Quiatchon-Baeza, Venea Dara Daygon, Mariafe N. Calingacion, Melissa A. Fitzgerald
Genetic And Geographic Profiling Of Fragrance-Associated Badh2 Mutations In Rice From China, Laos, And Vietnam, Lenie A. Quiatchon-Baeza, Venea Dara Daygon, Mariafe N. Calingacion, Melissa A. Fitzgerald
The Philippine Agricultural Scientist
Fragrance in rice is a culturally and economically significant trait in Asia and around the world. This study aimed to develop a genetic and geographic profile of the fragrance-associated BADH2 mutations (badh2.1 and badh2.11) in 1,067 rice varieties from China, Laos, and Vietnam, which are part of the International Rice Genebank Collection. Seventy-three varieties were found to carry the common eight-base pair (bp) deletion in exon 7 of the genes (badh2.1, also known as badh2.7), primarily from indica varieties, with some belonging to japonica, javanica, and intermediate varieties. Conversely, 59 varieties possess the recently identified badh2 allele, badh2.11 (also known …
Impact Of Sowing Time And Plant Density On Selected Traits And Yield Of Cotton Genotypes In Pakistan, Muhammad Rizwan Jamil, Kalim Ullah, Muhammad Mohibullah, Saeed Muhammad, Hafiz Abdul Haq, Sundas Batool, Rashida Aslam, Wasif Rasool
Impact Of Sowing Time And Plant Density On Selected Traits And Yield Of Cotton Genotypes In Pakistan, Muhammad Rizwan Jamil, Kalim Ullah, Muhammad Mohibullah, Saeed Muhammad, Hafiz Abdul Haq, Sundas Batool, Rashida Aslam, Wasif Rasool
The Philippine Agricultural Scientist
Extremely diversified cropping environments prevail in most cotton-growing areas of Pakistan due to prevailing rainfed conditions, prolonging the crop’s cultivation period. To contribute to the development of desired breeding traits for effective breeding programs, this study examined the production and growth pattern of 8 cotton genotypes. Four experiments were conducted in 2018 and 2019 at 2 locations in Dera Ismail Khan, Pakistan, to evaluate the performance of the studied genotypes at 3 plant densities and 2 sowing dates. Traits such as days to first flower opening, flowering duration, monopodial branches per plant, plant height at harvest, height-to-node ratio, fruiting branch …
Growth Performance And Yield Of Two Bioguma Sorghum Varieties Cultivated During The Rainy Season [Research Note], M. Umar Harun, Irmawati Irmawati, Marlin Sefrila, Astuti Kurnianingsih, Chandra Irsan
Growth Performance And Yield Of Two Bioguma Sorghum Varieties Cultivated During The Rainy Season [Research Note], M. Umar Harun, Irmawati Irmawati, Marlin Sefrila, Astuti Kurnianingsih, Chandra Irsan
The Philippine Agricultural Scientist
Sorghum is a cereal crop with significant potential, considering its benefits as a food, feed, or bioethanol source. Aside from being a drought-tolerant plant, sorghum can grow in different land conditions, with varieties Bioguma 1 and 2 considered to have high yield potential. Therefore, this study aimed to assess the growth and yield of these 2 sorghum varieties using a randomized block design with 3 replicates. The results showed that Bioguma 1 had a significantly better growth performance and produced a higher yield compared with Bioguma 2. Considering its higher disease resistance, growth, and yield, Bioguma 1 could be used …
Morphological Characterization, Pollen Viability, And Germinability Evaluation Of Two Plumeria Species In The University Of The Philippines Los Baños, Darel Kenth S. Antesco, Maria Charito E. Balladares, Alangelico O. San Pascual, Pablito M. Magdalita, Fernando C. Sanchez Jr
Morphological Characterization, Pollen Viability, And Germinability Evaluation Of Two Plumeria Species In The University Of The Philippines Los Baños, Darel Kenth S. Antesco, Maria Charito E. Balladares, Alangelico O. San Pascual, Pablito M. Magdalita, Fernando C. Sanchez Jr
The Philippine Agricultural Scientist
The genus Plumeria, locally known as kalachuci, is a popular ornamental tree belonging to the Apocynaceae family. The University of the Philippines Los Baños (UPLB) maintains a collection of Plumeria trees scattered across its campus; however, the origin of these trees remains unclear due to a lack of proper documentation. This study conducted morphological characterization and pollen analysis to provide information for further research. Results revealed the presence of 2 Plumeria species in the campus. P. obtusa has a linear leaf shape with acute tips and revolute margins while P. rubra has a lanceolate leaf shape. Additionally, P. …
Root Plasticity Of Selected Corn (Zea Mays L.) Varieties Grown For Food And Forage In Response To Fertigroe®-N And Urea, Vanica Apostol, Edna Aguilar, Lilia Fernando, Lourdes Edano Ma., Tonette Laude, Eureka Teresa Ocampo
Root Plasticity Of Selected Corn (Zea Mays L.) Varieties Grown For Food And Forage In Response To Fertigroe®-N And Urea, Vanica Apostol, Edna Aguilar, Lilia Fernando, Lourdes Edano Ma., Tonette Laude, Eureka Teresa Ocampo
The Philippine Agricultural Scientist
Root plasticity, the capacity of a corn root system to modify its growth and development in response to varying environmental conditions, is a crucial adaptability trait for optimizing water and nutrient uptake, especially in a challenging environments. Understanding root plasticity provides insights into the pattern basis of crop adaptation, contributing to the development of improved corn varieties and agricultural practices that optimize the production of both ear shoots and forage. This study assessed root traits and other morphological-physiological responses of three corn varieties (NK8840, IPB Var 6, and Pearl Sweet) grown for food (ear shoots) and forage (baby corn fodder) …
Morphological And Physiological Changes Of Katuray (Sesbania Grandiflora) During Seed Maturation [Research Note], Alangelico San Pascual, Lucille Elna De Guzman, Maurice Gravidez, Elijah Estante
Morphological And Physiological Changes Of Katuray (Sesbania Grandiflora) During Seed Maturation [Research Note], Alangelico San Pascual, Lucille Elna De Guzman, Maurice Gravidez, Elijah Estante
The Philippine Agricultural Scientist
Katuray (Sesbania grandiflora), whose flowers are consumed as steamed vegetables, is an important green manure crop in the Philippines. Understanding different processes leading to seed maturity can aid in determining S. grandiflora’s seed quality, preventing premature harvesting for seed increase, ensuring efficient propagation and production of seedlings, and breeding new varieties of this crop. Multiple flowers were tagged, and three to five pods were collected five days after anthesis (DAA) and at a five-day interval thereafter until 100% germination was achieved. Seed size, moisture content (MC), dry weight, germination percentage, and embryo development were observed and recorded. Seed length was …
Effects Of Soil Type, Irrigation Method, And Biomass Application On Grain Yield And Its Determinants In Irrigated Lowland Rice Of Agusan [Research Note], Jehru C. Magahud
Effects Of Soil Type, Irrigation Method, And Biomass Application On Grain Yield And Its Determinants In Irrigated Lowland Rice Of Agusan [Research Note], Jehru C. Magahud
The Philippine Agricultural Scientist
Information about the influence of soil type, irrigation method, and biomass use on rice productivity in Agusan is insufficient, despite their importance in developing or improving irrigated lowland rice production. Hence, this study determined the influence of these factors on grain yield and yield-contributing crop traits. It also explained grain yield based on yield determinants and recommended water management for improving grain yield. The greenhouse experiment was laid out in a three-factor randomized complete block design with 10 replications. The treatments were [a] Butuan sandy loam soil (SLS) and Butuan loam soil (LS); [b] continuously flooded (CF) and controlled irrigation …
Genetic Diversity Analysis Of Greater Yam (Dioscorea Alata L.) Collections Using Tuber Morphology And Simple Sequence Repeats (Ssr) Markers, Junelyn Ravelo, Lara Jaaziel Batalon, Antonio Lalusin
Genetic Diversity Analysis Of Greater Yam (Dioscorea Alata L.) Collections Using Tuber Morphology And Simple Sequence Repeats (Ssr) Markers, Junelyn Ravelo, Lara Jaaziel Batalon, Antonio Lalusin
The Philippine Agricultural Scientist
The diversity of 148 greater yam (Dioscorea alata L.) accessions from the collections of the National Plant Genetics Resources Laboratory (NPGRL), Visayas State University (VSU), and the Institute of Crop Science - University of the Philippines Los Baños (ICROPS-UPLB) was evaluated using 54 Dioscorea-based SSR markers. Out of 54 SSR markers, polymorphic bands were amplified in 50 SSR markers with Polymorphic Information Content (PIC) values ranging from 0.65 to 0.89. Subsequent cluster analysis generated nine distinct clusters with a Jaccard’s distance index of 0.85, implying 85% dissimilarity among the greater yam accessions. Each formed cluster from the analysis comprised …
Genetic Approaches To Improving Coffee Resistance Against Diseases And Pests In The Philippines [Review Paper], Nick Rainier Santos, Ernelea Cao, Daisy May Santos
Genetic Approaches To Improving Coffee Resistance Against Diseases And Pests In The Philippines [Review Paper], Nick Rainier Santos, Ernelea Cao, Daisy May Santos
The Philippine Agricultural Scientist
There is a huge demand for coffee in the Philippines but local supply has a long way to go at catching up. One way to aid local farmers is to develop coffee varieties with combined desirable traits including natural resistance against various diseases and insect pests. This can increase product output and reduce costs on chemical control that can, in turn, potentially increase their profits. This paper reviews and gives an overview of the genetic research on coffee toward improving plant defense. The most prominent diseases and pests plaguing plantations worldwide are noted. From studies using classical tools such as …
Validation Of Newly Designed Ssr Markers For Eight Rice (Oryza Sativa L.) Genotypes With Variable Heat Tolerance Responses Based On Agromorphic Data And Pollen Fertility Analysis [Research Note], Monaliza B. Magat, Norvie L. Manigbas, Jessica D. Rey
Validation Of Newly Designed Ssr Markers For Eight Rice (Oryza Sativa L.) Genotypes With Variable Heat Tolerance Responses Based On Agromorphic Data And Pollen Fertility Analysis [Research Note], Monaliza B. Magat, Norvie L. Manigbas, Jessica D. Rey
The Philippine Agricultural Scientist
Rice is one of the most valuable staple food crops in the world. However, several challenges greatly affect production, one of which is the threat imposed by heat stress. To address this, researchers are developing varieties that are heat stress tolerant with genetic markers aid. In this study, eight rice genotypes, namely Dular, Nagina 22, NSIC Rc 222, Milyang 23, EL15, EL92, EL85, and IR52 were observed for agromorphic data, which included plant height, panicle length, filled and unfilled grains, and grain yield. Flower samples were collected to determine the effect of heat stress on pollen fertility. Molecular markers were …
M. ‘Teresita Lantin-Rosario’ And M. ‘Dolores A. Ramirez’ – New Varieties Of Mussaenda [Research Note], Gerlie P. Antesco, Jennelyn C. Bengoa, Maria Luisa D. Guevarra
M. ‘Teresita Lantin-Rosario’ And M. ‘Dolores A. Ramirez’ – New Varieties Of Mussaenda [Research Note], Gerlie P. Antesco, Jennelyn C. Bengoa, Maria Luisa D. Guevarra
The Philippine Agricultural Scientist
An outstanding selections of Mussaenda developed in the Institute of Plant Breeding (IPB), College of Agriculture and Food Science (CAFS), University of the Philippines Los Baños (UPLB) were registered to the National Seed Industry Council as new varieties. These are Mussaenda ‘Teresita Lantin-Rosario’ and Mussaenda ‘Dolores A. Ramirez’, named after an ornamental plant breeder and a National Scientist, respectively, in recognition to their significant contributions in the fields of genetics and plant breeding. Mussaenda ‘Teresita Lantin-Rosario’ is a hybrid and a progeny from a cross between M. ‘Maria Makiling’ and M. ‘Diwata’. The calyx lobes are all petaloid, numerous, and …
Determination Of Some Seed Characteristics Of False Flax (Camelina Sativa L. Crantz) Genotypes Grown Under Semi-Temperate Conditions, İlhan Subaşı, Yusuf Arslan, Tamer Eryigit, Vahdettin Çiftçi, Mahmut Çamlıca
Determination Of Some Seed Characteristics Of False Flax (Camelina Sativa L. Crantz) Genotypes Grown Under Semi-Temperate Conditions, İlhan Subaşı, Yusuf Arslan, Tamer Eryigit, Vahdettin Çiftçi, Mahmut Çamlıca
The Philippine Agricultural Scientist
Camelina is an alternative low-input oil plant grown in marginal areas in Turkey. This study aimed to determine some quality characteristics of 39 camellia genotypes in ecological conditions in Bolu, Turkey. The field experiments were carried out in an augmented design with randomized blocks. In this work, some important properties such as thousand seed weight, oil content, fatty acid composition, and protein ratio were investigated. Results showed that mean data for thousand seed weight, oil ratio, and protein ratio were 0.63 – 1.5 g, 26.69 – 39.17%, and 21.81 – 29.81%, respectively. Considering the oil content of the genotypes used …
Flowering Habit And Photoperiodic Flowering Response Of Stevia (Stevia Rebaudiana Bertoni) In The Philippines, Kennilyn May Balbin-De Luna, Bong Salazar
Flowering Habit And Photoperiodic Flowering Response Of Stevia (Stevia Rebaudiana Bertoni) In The Philippines, Kennilyn May Balbin-De Luna, Bong Salazar
The Philippine Agricultural Scientist
Stevia is a perennial shrub commercially cultivated for the sweet-tasting compounds known as steviol glycosides (SVglys). SVglys are extracted from the green leaves, thus maintenance of vegetative growth is critical in stevia production. This study was conducted to describe the flowering habit and response of potted stevia plants to different photoperiods under Philippine conditions. Photoperiodic treatments (10, 11, 12, 13, and 14 h) were provided using light chambers. Stevia has both terminal and axillary flowering habits. It has five white florets enclosed in a capitulum and exhibits an opposite branching pattern. Results showed that stevia is a facultative short-day plant …
First Detection Of Naturally Introgressed Bt Cry1ab In Asian Corn Borer [Ostrinia Furnacalis (Guenée)] - Resistant Traditional Maize (Silangan) In The Philippines, Merdelyn T. Caasi-Lit, Eureka Teresa C. Ocampo, Artemio Salazar, Jefferson Paril, Bryan Novio, Bernard Panabang, Angelyn Marta Marmeto
First Detection Of Naturally Introgressed Bt Cry1ab In Asian Corn Borer [Ostrinia Furnacalis (Guenée)] - Resistant Traditional Maize (Silangan) In The Philippines, Merdelyn T. Caasi-Lit, Eureka Teresa C. Ocampo, Artemio Salazar, Jefferson Paril, Bryan Novio, Bernard Panabang, Angelyn Marta Marmeto
The Philippine Agricultural Scientist
Resistance against insect pests is one of the most promising and highly favored characteristics of an economically important crop. In the Philippines, the Asian corn borer (ACB), Ostrinia furnacalis (Guenée), is the most destructive insect pest of maize. The discovery of Bacillus thuringiensis and the Bt toxin, which led to the development of Bt corn, effectively controlled this pest. In this study, four traditional varieties of maize that showed resistance against ACB were tested for the presence of Bt Cry1Ab protein. Out of these four, a traditional variety from San Carlos City, Pangasinan, which was initially thought to have natural …
Epinasty Accompanies Potassium Nitrate-Induced Flower Bud Break In 'Carabao' Mango [Research Note], Ulysses Besas, Calixto Protacio
Epinasty Accompanies Potassium Nitrate-Induced Flower Bud Break In 'Carabao' Mango [Research Note], Ulysses Besas, Calixto Protacio
The Philippine Agricultural Scientist
The hypothesis that potassium nitrate application promotes epinasty in ‘Carabao’ mango through increased ethylene production was investigated. The degree of drooping, apical primordium growth as affected by shoot ethylene and levels after potassium nitrate spraying were monitored. Evidence presented established for the first time in ‘Carabao’ mango that epinasty occurred just before flower emergence, coinciding with visible bud break, and extended up to 18 days, marking floral anthesis. The possible reasons could be the higher levels of ethylene at 0.31% and earlier increase of ethylene in the shoot apex at four hours and apical primordium growth. Increased ethylene levels at …
Establishment Of The In Vitro Culture And Plant Regeneration Of Anubias Barteri Var. Nana 'Mini', Kuan-Hung Lin, Chih-Peng Kuo, Li-Ru Chen
Establishment Of The In Vitro Culture And Plant Regeneration Of Anubias Barteri Var. Nana 'Mini', Kuan-Hung Lin, Chih-Peng Kuo, Li-Ru Chen
The Philippine Agricultural Scientist
Anubias barteri is an ornamental aquatic plant of economic importance worldwide. Effective removal of contaminants has been a major problem for the in vitro propagation of A. barteri. Hydrogen peroxide (H2O2) was applied as a pre-disinfectant to treat rhizome bud explants of A. barteri var. nana ‘Mini’ followed by disinfection with mercuric chloride (HgCl2) to eliminate in vitro contamination. However, application of 0.1% HgCl2 for 5 min without pre-disinfecting with H2O2 significantly reduced the contamination rate to 44.4% compared to other combinations. Moreover, in vitro shoots of A. barteri …
Efficacy Study Of Selected Maize (Zea Mays L.) Genotypes Against The Asian Corn Borer, Ostrinia Furnacalis (Guenée), Yoryncita Marfori, Merdelyn Caasi-Lit, Tonette Laude
Efficacy Study Of Selected Maize (Zea Mays L.) Genotypes Against The Asian Corn Borer, Ostrinia Furnacalis (Guenée), Yoryncita Marfori, Merdelyn Caasi-Lit, Tonette Laude
The Philippine Agricultural Scientist
Laboratory and screen house studies were conducted to assess the efficacy of selected twenty-six maize varieties against Asian corn borer (ACB), Ostrinia furnacalis (Guenée). Hierarchical tree based on resistance parameters clearly revealed that the twenty-six maize varieties are best classified into three groups, viz. resistant, intermediate, and susceptible. In laboratory test, the varieties RCS2, RCS4, RCS5, 'IPB Var13', Bt2, Bt3, and Bt4 were consistently identified as highly resistant. Further examinations in stalk feeding assay showed that the resistant varieties had sharp decline in larval survival (LS) on the 2nd to the 5th day of larval feeding in …
Spectral Lights Based Treatment Enhanced Biomass Accumulation And Secondary Metabolites Production In Callus Culture Of Citrus Reticulata, Faiza Anum, Naveed Iqbal Raja, Tahira Sultana, Abeer Kazmi, Amir Ali, Bushra Qayyum, Anza Afzal, Aneela Nijibat, Zia-Ur-Rehman Mashwani, Abeer Kazmi
Spectral Lights Based Treatment Enhanced Biomass Accumulation And Secondary Metabolites Production In Callus Culture Of Citrus Reticulata, Faiza Anum, Naveed Iqbal Raja, Tahira Sultana, Abeer Kazmi, Amir Ali, Bushra Qayyum, Anza Afzal, Aneela Nijibat, Zia-Ur-Rehman Mashwani, Abeer Kazmi
The Philippine Agricultural Scientist
Citrus reticulata is a common fruit, belongs to the family Rutaceae. It contains terpenes, phenolics, flavonoids, and vitamin C in conjugation with sugars, amino acids, minerals, organic acids and other biologically important compounds. Application of light elicitation strategies in in vitro plant cultures is acquiring more interest for their potential in feasible biomass accumulation and therapeutically important secondary metabolites production. The present study was designed to investigate the effects of different monochromatic lights (white, red, blue, green, and yellow) on the proliferation and secondary metabolites accumulation in callus cultures of Citrus reticulata raised in response to treatment with AgNPs and …
Genetic Diversity And Population Structure Of Sugarcane (Saccharum Officinarum L.) Collected From Seven Philippine Regions For Use As Breeding Stocks For Crop Improvement, Jan Leandro Acedera, Jhun Laurence Rasco, Jemimah Banganan, Antonio Lalusin
Genetic Diversity And Population Structure Of Sugarcane (Saccharum Officinarum L.) Collected From Seven Philippine Regions For Use As Breeding Stocks For Crop Improvement, Jan Leandro Acedera, Jhun Laurence Rasco, Jemimah Banganan, Antonio Lalusin
The Philippine Agricultural Scientist
Selection of parents for hybridization relies on the information on their genetic relationship and diversity which are essential in any breeding program. This study aimed to estimate the extent of genetic diversity and population structure of 76 sugarcane accessions from seven regions in the Philippines using 57 morphological characters and 50 microsatellite markers. The sugarcane collections exhibited moderate to high diversity with mean of H’ = 0.72 for qualitative and H’ = 0.75 for quantitative morphological characters, respectively. This is corroborated by the analysis of variance (ANOVA) of agronomic parameters, except for stalk length. Unweighted Pair Group Method with Arithmetic …
Weedy Rice Conserved Ex Situ Characterized Using Morphological And Simple Sequence Repeat (Ssr) Markers, Rubylyn Mijan Infante, Maria Elizabeth B. Naredo, Merlyn S. Mendioro
Weedy Rice Conserved Ex Situ Characterized Using Morphological And Simple Sequence Repeat (Ssr) Markers, Rubylyn Mijan Infante, Maria Elizabeth B. Naredo, Merlyn S. Mendioro
The Philippine Agricultural Scientist
A clear understanding of genetic diversity in weedy rice is important in improving protocols for its conservation, ex situ. To this end, Asian collections of weedy rice together with accessions of the wild AA genome species Oryza nivara Sharma et Shastry and Oryza rufipogon Griffith, and the cultivated species, Oryza sativa L. were characterized using 16 qualitative morphological traits and 18 SSR markers. The Shannon-Weaver index (H’) revealed higher diversity in the weedy (mean H’ = 0.76) and wild O. nivara (mean H’ = 0.79) and O. rufipogon samples (mean H’ = 0.69) compared to the cultivated …
Grain Yield Variations In Rice Genotypes Under Different Growing Environments In The Philippines, Kim Nyka C. Perdiguerra, Shiro Mitsuya, Akira Yamauchi, Felino P. Lansigan, Maria Victoria O. Espaldon, Jose E. Hernandez, Pompe C. Sta. Cruz
Grain Yield Variations In Rice Genotypes Under Different Growing Environments In The Philippines, Kim Nyka C. Perdiguerra, Shiro Mitsuya, Akira Yamauchi, Felino P. Lansigan, Maria Victoria O. Espaldon, Jose E. Hernandez, Pompe C. Sta. Cruz
The Philippine Agricultural Scientist
Grain yield variations in PSB Rc18, NSIC Rc222 (inbreds) and NSIC Rc202H (hybrid) were determined across growing environments as a function of cropping seasons and locations in rice producing areas in the Philippines. Contribution of location to variation in grain yield is 61.0%, while 12.7% for the season, and 6.1% for the genotype and this must be due location by season by genotype interactions. Dry season cropping in Nueva Ecija produced the highest mean grain yield. On the other hand, wet season cropping in Davao del Sur produced the least mean grain yield. The genotypes differed in their response to …