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Full-Text Articles in Life Sciences
Effect Of Plant Density On Yield And Yield Components And Seed Chemical Composition Of Some Sunflower Varieties, N A. Noueldin, M E. El-Bially, B A. El-Ahmer, M G. El-Baz
Effect Of Plant Density On Yield And Yield Components And Seed Chemical Composition Of Some Sunflower Varieties, N A. Noueldin, M E. El-Bially, B A. El-Ahmer, M G. El-Baz
IGC Proceedings (1993-2023)
The objective of this research is to study the effect of varieties (Mayak, Elorida 2000 and sigce 475), hill distance (20, 30 and 40 cm) and ridge width (50, 60 and 70 cm) on productivity of sunflower (Helianthus annus L.). The highest oil % was obtained by sowing sigco 475 at a 40 cm hills distince under 60 cm. ridge width and the highest oil yield feddan-1* as well as seed yield feddan-1 was obtained by sowing Mayak on 20cm hills under a 50cm ridge width.
Differentiation Of Festuca Pratensis Varieties And Festulolium Hybrids By Electrophoresis, H Hahn, W Schoberlein, K Forster
Differentiation Of Festuca Pratensis Varieties And Festulolium Hybrids By Electrophoresis, H Hahn, W Schoberlein, K Forster
IGC Proceedings (1993-2023)
In the present study seed proteins and isozymes of varieties and lines of Festuca pratensis and Festulolium were investigated with the aim of finding methods for the discrimination of meadow fescue varieties and the identification of Festulolium hybrids. The banding patterns of ultrathin-layer isoelectric focusing (UTLIEF) of bulked seed samples allowed a clear distinction of Festulolium hybrids of different crossing combinations from each other and in most cases also from their parental species. Despite the outcrossing character, identification of some hybrids and crossing parents was also achieved using protein patterns of single seeds. By means of isozyme electrophoresis of Festuca …
Compared Productivity Of Local Ecotypes And Selected Cultivars Of Perennial Ryegrass (Lolium Perenne) In High Belgium, P Limbourg, Ph Lecomte
Compared Productivity Of Local Ecotypes And Selected Cultivars Of Perennial Ryegrass (Lolium Perenne) In High Belgium, P Limbourg, Ph Lecomte
IGC Proceedings (1993-2023)
The objective of the trials was to compare the productivity of local ecotypes of perennial ryegrass (Lolium perenne) issued from old permanent pastures of High Belgium to that of adapted cultivars. During 3 consecutive years 2 local ecotypes were compared, in pure seedling at 2 different levels of nitrogenous manure, to 2 cultivars frequently used in seed mixtures for pastures. Results obtained using a cutting cycle wich simulated grazing did not reveal significant differences in terms of forage production or feeding value. These results explain the weak increase in forage production recorded in pastures renovated by reseeding as …
Annual Ryegrass Managed For Reseeding Purposes: Relationship Between Heading Date And Seed Production, Javier Do Canto, D. Giorello
Annual Ryegrass Managed For Reseeding Purposes: Relationship Between Heading Date And Seed Production, Javier Do Canto, D. Giorello
IGC Proceedings (1993-2023)
Annual ryegrass reestablished yearly by allowing natural reseeding is a common practice among Uruguayan farmers. Its success relies on the farmers’ ability to balance grazing and seed production during spring. We tested a set of ryegrass varieties covering a wide range of heading dates under defoliation management. Each variety was managed independently according to its phenological stage, resulting in different closing dates. We tested the varieties’ ability to produce seeds under such management, the effect of heading date on seed yield components, the resulting amount of straw and its effect on summer soil temperatures. A strong negative association between heading …