COMBINING ABILITY AND GENE ACTION IN SOME COTTON VARIETIES | ||||
| Journal of Plant Production | ||||
| Article 2, Volume 28, Issue 5, May 2003, Page 3317-3323 PDF (498.77 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.243285 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. F. Lasheen,; M. A. Abbas; G. H. Abdel-Zaher | ||||
| Cotton Research Institute, Agricultural R •• earch Center | ||||
| Abstract | ||||
| The present work was carried out during two successive seasons 2001 and 2002 at Salcha Agricultural Research Station to study general and specific combining abilities for the Egyptian cotton varieties: Giza 86. Giza 85, Giza 90 and Giza 83 (Lines) and Giza 70. Giza 89 and the Russian variety Karshenskey (testers), aU belong to GOS8ypium barbadense L. The dominance component of variance played a considerable role in controlling most characters except for boll weight. lint percentage and lint in ex. this was confirmed by low heritability values in narrow sense. The estimates of the proportional contribution of lines were hig er than those of testers for all studied characters except for seed cotton yield per plll"t and number of bolls per plant, while high estimates of the proportional contribution were obtained from the lines x testers interaction for seed cotton yield per plant, Itnt yield per plant and number of bolls per plants. For mean values of yield and its components, Giza 86(L,) shovred the highest values for all characters, while Giza 90 (L3) possessed the lowest estimates of most characters. From the components of variance, it was clear that the en"iro~mental variance appeared to be of small effect on the expression of gene govemlng boll weight, lint percentage, seed index and lint index, while It had highly effective seed cotton yield per plant, lint yield per plant and number of bolls per plant. these results were assured by heritability estimates in broad sense. | ||||
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