| Titles |
|
English :
|
Estimation of genetic parameters using fivepopulations of some bread Wheat cresses
|
|
Arabic :
|
تقدير الثوابت الوراثية باستخدام العشائر الخمسة فى بعض هجن من قمح الخبز
|
|
| Abstract |
Two experiments were carried out using two crosses namely Giza 168 x Gemmiza 7 and Irina x Sids 1. Five populations (P1, P2, F1, F2 and F3) for each cross were used in this investigation.
Significant positive heterotic effects were obtained for number of spikes/plant and grain yield/plant in the first cross. On the other hand, significant negative heterotic effects were found for number of kernels/spike, number of spikes per plant and grain yield per plant in the second cross . Over dominance towards the higher parent for number, of kernels/spike and grain yield per plant observed in the first cross. Inbreeding depression estimates were found to be significant for all studied attributes except for number of spikes/plant and grain yield/plant in the first cross. On the other side inbreeding depression were significant negative for kernel weight in the second cross. F2 deviation (E1) were significant for all studied characters for two crosses except for number of spikes/plant and grain yield/plant in the first cross. Moreover, F3 deviation (E2) were significant for all studied characters in two crosses except for grain yield/plant in the first cross.
The (additive – additive x dominance) gene effect was significant for all studied characters in two crosses. These results suggest the potential for obtaining further improvement in most studied characters. In addition, dominance and epistasis were found to be significant for most of the studied attributes.
High to medium values of heritability estimates were found to be associated with high and moderate expected and actual grain in most characters. This obtained results indicated that selection for the studied characters could be used in the early generations but may more effective if post poned to late one (shehab El-Din 1993).
These study concluded that it may be take in considration the first cross (Giza 168 x Gm. 9) to improvement the breeding program in the national wheat research program.
|
| Publication year |
2006
|
| Pages |
4927-4935
|
| Organization Name |
Field Crops Research Institute (FCRI)
|
| Country |
Egypt
|
| City |
القاهرة
|
| Publisher |
Name:
كلية الزراعة - جامعة المنصورة
|
| serial title |
مجلة جامعة المنصورة للعلوم الزراعية
|
| Volume |
31
. 8
|
| Department |
Wheat Research
|
| Author(s) from ARC |
|
| Agris Categories |
Plant physiology - Nutrition
|
AGROVOC
TERMS |
Schizaphis graminum.
|
| Publication Type |
Journal
|