Methods For The Establishment Of Leucaena Leucocoephala In Cuba,
2025
Instituto de Ciencia Animal
Methods For The Establishment Of Leucaena Leucocoephala In Cuba, T E. Ruiz, G Febles, N Sistachs, L E. Diaz, G Bernal, J J. Leon
IGC Proceedings (1977-2023)
Studies in tropical and sub-tropical regions of the world on the factors influencing the establishment and early management of legume swards as pure cultures have not been carried out integrally. Thus, the objective of the present study was to define the best options of the main components so as to develop a technology for establishing Leucaena leucocephala under our conditions.
Studies On Seed Storage And Sowing Time Of Leucaena Leucocphala In Cuba,
2025
Instituto de Ciencia Animal, Cuba
Studies On Seed Storage And Sowing Time Of Leucaena Leucocphala In Cuba, T E. Ruiz, G Febles
IGC Proceedings (1977-2023)
Germination of stored seeds and sowing time are essential factors that must be known when a technology for pasture utilization is required (Febles and Ruiz, 1986; Ruiz and Febles, 1986). Thus, these experiments were set out to learn the performance of the seed quality of Leucaena leucocephala cv Peru stored under different conditions and to determine the influence of the sowing time of this species during the rainy season.
Surface Recultivation Systems Of Grasslands On The Slopes In Czechoslovakia,
2025
Grassland Institute of Soil Fertility
Surface Recultivation Systems Of Grasslands On The Slopes In Czechoslovakia, F Pnacek, Anna Javorkova
IGC Proceedings (1977-2023)
In Czechoslovakia, the part of extensive used pastures on the slopes is covered by small shrubs and self-sown little trees. Their recultivation by bulldozer is very expensive and often makes erosion. Therefore the special self-propelled machine (MT6-01 l) with the commercial name Kabar-132 with adapter for clearing the grasslands of woods and partly arrange micro relief without damaging the turf was constructed. Special self-propelled machine has an automatic transversally equilibration of inclination to the horizontal level and hydrostatic driving mechanism with continuous driving regulation of speed from Oto 25 km per hour and it provides its high slope accessibility up …
Factors Influencing Pasture Establishment And Persistence In The Mid-Altitude Zone, Yunnan, Southern China,
2025
Bureau of Animal Husbandry, China
Factors Influencing Pasture Establishment And Persistence In The Mid-Altitude Zone, Yunnan, Southern China, Kui Jia-Xiang, R N. Glencross, Ai Hongxin, Chen Xiong
IGC Proceedings (1977-2023)
The mid-altitude zone in Yunnan Province of SW China ranges from 1500-2500 m in altitude and has a climate intergrading between sub-tropical and temperate with a mean temp. of 7-10°C in the coldest month and 19-22 °C in the hottest month. The annual rainfall ranges from 800-1200 mm with 80 % falling in the monsoon period, May to September. About 80 % of the total 39.4 m ha of the province is in this very hilly mid-altitude zone. (He et al., 1982) Native grassland vegetation is dominated by Themeda trianda, Arundinella radoli, Imperata cylindrica and some other grasses such as …
The Effect Of Depth Of Seeding And Soil Crusting On Germination And Establishment Of Seven Pasture Grass Species,
2025
University of Alberta
The Effect Of Depth Of Seeding And Soil Crusting On Germination And Establishment Of Seven Pasture Grass Species, Jane R. King, C Bladen
IGC Proceedings (1977-2023)
Many pasture grass species because of their small seed size are difficult to establish. Seeding at a greater depth in order to access moisture lower in the soil profile may increase seed germination but will not necessarily facilitate emergence and establishment. The direct relationship between seed size and emergence vigour has yet to be quantified for a number of grasses commonly used for pasture in the parkland district of central Alberta. These experiments were designed to examine the detrimental effects that increasing seeding depth may have on emergence and establishment. In addition, the ability to emerge through an artificial crust …
Effects Of Seeding Time And Nitrogen Fertilizer On Snow Damage Of Italian Ryegrass (Lolium Multiflorum Lam),
2025
Hokuriku National Agricultural Experiment Station
Effects Of Seeding Time And Nitrogen Fertilizer On Snow Damage Of Italian Ryegrass (Lolium Multiflorum Lam), Y Watanabe, T Shioya, T Yukawa
IGC Proceedings (1977-2023)
In Japan, Italian rycgrass is accepted as livestock feed. However, in Hokuriku district, one of the heaviest snow fall area in the world, lhe survival of Italian ryegrass in winter is frequently affected by the prolonged, deep snow cover. So far, some experiments on the mechanisms of the snow damage of vvinter crops have been conducted, and several factors related to the snow damage have been clarified. In the cultivation method, il is said Lhat seeding Lime, nitrogen fertilizer and cutting influence the snow damage. In physiological aspects, non structural carbohydrate content is associated with the snow damage. In this …
Results Of Overseeing Natural Grasslands On Dry Solonetz Soil,
2025
Agricultural University, Hungary
Results Of Overseeing Natural Grasslands On Dry Solonetz Soil, G Nagy
IGC Proceedings (1977-2023)
In Hungary, 25.8% of the total grasslands can be found on sodic soils, 12.6% of which arc on solonetz soils. Because of the poor soil conditions (low nutrient content, heavy compacted clay soil, high Na content etc.) the composition of natural sward is unfavourable, yields are extremely low, which makes possible only extensive grazing management. In our experiments, we try to intensify the natural grasslands of dry solonetz soils by overseeding.
Establishment Of Early Winter Seeding Of Forages In Cold Regions Of Japan,
2025
Obihiro University of Agriculture and Veterinary Medicine
Establishment Of Early Winter Seeding Of Forages In Cold Regions Of Japan, J Maruyama, K Fukunaga
IGC Proceedings (1977-2023)
Eastern Hokkaido is located in the southern end of the subfrigid zone. It has a very cold winter, although the summer is reasonably warm and humid. The annual temperature ranges between -25 °C and 30 °C, averaging about 7 °C in Obihiro. The precipitation averages about 900 mm per year. Soil freezing is very common in this area. Therefore, there is general agreement among workers that forage seeding in eastern Hokkaido must be confined to spring or summer. But the success of seeding is highly dependent upon the moisture content of the soil. For example, in some years in eastern …
Integrating Crop And Pasture In A High Rainfall Environment In South Eastern Australia,
2025
NSW Agriculture
Integrating Crop And Pasture In A High Rainfall Environment In South Eastern Australia, P Dowling
IGC Proceedings (1977-2023)
In traditional pasture areas, there is little economic opportunity to provide a 'clean' seedbed for replanting of new pasture. This is thought to enable the carry over of weed seed from the old to the new pasture phase resulting in premature decline of the improved pasture. The growing of a crop or crop rotation at the end of the old pasture phase however, would utilize improved soil fertility and enable the pasture sequence to be broken, thereby increasing the probability of a 'clean' seedbed (Reeves, 1984). Grazing oats has been used in this role but the alternative of selecting crops …
Improving Seed Pellets For Grassland Renovation,
2025
Niigata University
Improving Seed Pellets For Grassland Renovation, H Hirota, N Fukuyama, T Kanno
IGC Proceedings (1977-2023)
More than twelve hundred public pastures have been established since I 960's in Japan, totalling some 0.6 mil. ha located in highland areas to raise cattle. Now most of them need renovation because of low productivity. This is due to mismanagement, insect attack, weed invasion and under-utilization, etc. But complete tilling is not advocated on slope sites as it is in danger of soil erosion after reseeding. Several methods h��ve been proposed to renovate the deteriorated pastures, e.g. usmg herbicides (Blackmore, 1965), burning (Sawada et al., 1986), surface tilling (White, 1973), surface sowing with phosphate and lime (Cullen, 1966) and …
Establishment Of 'Mott" Dwarf Elephantgrass In A Semi-Arid Climate,
2025
Texas A&M University
Establishment Of 'Mott" Dwarf Elephantgrass In A Semi-Arid Climate, W R. Ocumpaugh
IGC Proceedings (1977-2023)
'Mott' dwarf clcphantgrass [Pennisetum purpureum (L.) Schum.] was evaluated as line N75 and released as germplasm from the Georgia Coastal Plain Experiment Station at Tifton. Georgia USA, as Tift N75 (Hanna, 1987). Extensive research in Florida, USA has demonstrated the superior quality aspects of Mott elcphantgrass with average daily gains of approximately l kg (Mott and Ocumpaugh, 1984; Sollenberger et al. 1987). Establishment of dwarf elephantgrass has been reported to be more difficult than tall elephantgrass (Woodard et al., 1985; Sollenberger et al., 1987). Placement of stem pieces in the soil at a 45° ��ngle, horizontal or vertical, did not …
Somatic Embryogenesis From Mature Embryo Of Tall Wheatgrass (Agropyron Elongatum) And Effects Of Nacl On Induction And Growth Of Callus From Its Different Explants,
2025
Northwestern Normal University
Somatic Embryogenesis From Mature Embryo Of Tall Wheatgrass (Agropyron Elongatum) And Effects Of Nacl On Induction And Growth Of Callus From Its Different Explants, Shi Decheng, Xi Ti, Zhu Tingcheng
IGC Proceedings (1977-2023)
Since it has been found that the plant regeneration of gramineous plants can be realized through somatic embryo genesis, a great development of tissue culture is obtained not only in cereals but also in grasses, which makes possible the genetic engineering and production of artificial seed. In addition, a progress has been made in selection of various valuable mutants by inducing calli or cells cultured to vary. For example, Zhou (1986) by inducing tobacco tissue on a medium containing 0.5 % NaCl has got NaCl-tolerant callus; then the callus were selected by increasing progressively the concentration of NaCl and finally …
Forage Crop Improvement Through Biotechnology,
2025
Louisiana State University
Forage Crop Improvement Through Biotechnology, S S. Croughan
IGC Proceedings (1977-2023)
Bermudagrass (Cynodon dactylon) is a perennial forage grass grown on over 10 million ha worldwide. In the southern United States, it is used extensively for grazing and the production of hay. It is a well adapted grass, but improvements in traits such as forage quality and pest resistance are needed. Much variation in the nutritional value exists between genotypes. Tissue culture offers a method for the production of improved germplasm. Most plants regenerated from callus cultures will vary from the original variety from which they were derived. This phenomenon is referred to as somaclonal variation and can be …
Obtention Of King Grass (Pennisetum Purpureum) Clones From Tissue Culture. Selection And Evaluation Of Mutants,
2025
Instituto de Ciencia Animal
Obtention Of King Grass (Pennisetum Purpureum) Clones From Tissue Culture. Selection And Evaluation Of Mutants, R O. Martinez, M Monzote, R S. Herraera, R Cruz, V Torres
IGC Proceedings (1977-2023)
King grass (2n = 28) is widely used in Cuba for forage production. The increase in the variability of this species is therefore of special interest in agriculture. Tissue culture as a technique to produce and select somaclones from the king grass donor was used to obtain variability. These were obtained when the apical meristems were cultivated in MS medium with 3 mg/I of 2,4 D to regenerate the plants with different hormonal combinations. Those of 0.1 mg/! of kinetine (Martinez, 1986) were prominent. The variability in the selection and evaluation processes is exposed in this paper.
Forage Grass Plant Modification Through Tissue Culture, Haploids And Doubled Haploids,
2025
USDA, Agricultural Research Service
Forage Grass Plant Modification Through Tissue Culture, Haploids And Doubled Haploids, M J. Kasperbauer
IGC Proceedings (1977-2023)
Tall fescue (Festuca arundinacea Schreb.) is a widely-grown cool-season forage grass (Buckner and Bush, 1979). It is windpollinated and generally selfsinfertile. Plants are highly heterozygous and improvement through conventional breeding is very slow. Therefore, use of tissue culture, haploids and doubled haploids offers an approach to accelerate the genetic improvement.
Tissue Culture Of Timothy (Phleum Pratensis L.),
2025
Hokkaido University
Tissue Culture Of Timothy (Phleum Pratensis L.), H Nakashima
IGC Proceedings (1977-2023)
Timothy (Phleum pratensis L.) is one of the most important grasses in Hokkaido, northern island of Japan, because of its winter hardiness and ability to give good quality hay. Recent advances in cellular and molecular biology of plant encourage to apply biotechnology not only to food crops but also to fodder crops (Vasil, 1985). To create new breeding materials, somaclonal variation, embryo rescue from wide cross and protoplast fusion have been studied extensively. In vitro propagation is re-emphasized as a basic requirement for all aspects of plant biotechnology in relation to agriculture. This serial studies have been carried out to …
Trisomic Red Clover,
2025
University of Kentucky
Trisomic Red Clover, N L. Taylor
IGC Proceedings (1977-2023)
The primary reason for producing trisomic red clover is for gene mapping. Although the methodology for producing trisomics has long been established, little research has been conducted in red clover (Trifolium pratense L.). Likewise, very few gene mapping investigations except for some early data by Williams (1937) have been reported. The program at the University of Kentucky that suggested the possibility of using trisomics for gene mapping was the attempted production of tetraplo'ids (2n = 4x = 28) via 2x-4x and 4x-2x crosses using gametic non-reduction. Some of these crosses produced triplo'ids (2n = 3x = 21 or 22) …
Study On Tissue Culture And Plantlet Regeneration From Cotyledonary Nodes And Immature Embryoes In Trifolium Lupinaster L.,
2025
Jilin Academy of Agricultural Sciences
Study On Tissue Culture And Plantlet Regeneration From Cotyledonary Nodes And Immature Embryoes In Trifolium Lupinaster L., Gao Zhensheng, Hong Fuzeng
IGC Proceedings (1977-2023)
Regenerated plantlets of fourteen clover species have been obtained from tissue and cell cultures by the scientists in different countries. The results concerning Trifolium lupinaster L. ( one of the native clovers in the northeast of China). culture are rarely reported at present.
Tissue Culture Techniques For Maintenance And Distribution Of Germplasm Of Tropical Grasses,
2025
International Livestock Centre for Africa
Tissue Culture Techniques For Maintenance And Distribution Of Germplasm Of Tropical Grasses, T J. Ruredzo, J Hanson
IGC Proceedings (1977-2023)
Conservation of germplasm has relied on the principle that seeds can be stored for long periods under cold, dry conditions. However, some plants which are vegetatively propagated seldom produce viable seeds. Until recently the only means of conservation of these species was vegetatively in field genebanks, where the plants require considerable space, careful management and are at risk from pests and diseases. These include the tropical grasses Cynodon and Digitaria which are very important forage species in tropical and subtropical parts of the world. In vitro culture techniques have considerable potential for use in management of germplasm. Recent advances in …
Polynucleate Pollen Formation In Cultured Medicago Sativa L. Anthers,
2025
CNR
Polynucleate Pollen Formation In Cultured Medicago Sativa L. Anthers, M Piccirilli, G J. Tanner, S Arcioni
IGC Proceedings (1977-2023)
The induction of non-physiological divisions in microspores through in vitro culture of anthers or pollen grains has led to the production of haploid plants in many species. However, there are still a large number of species in which haploid plants have not yet been obtained from generative cells. One of these species is Medicago sativa L., despite the great success attained in the regeneration of plants via tissue or protoplast culture. This work was conducted with the aim of studying the conditions to induce in vitro development in M. sativa microspores, as a first step in obtaining haploid plants through …
