الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 139 |  |  |
| | | from | 139 | | |
Abstract
Selection criteria based on number of bolls/plant and lint index are more effective for improving seed cotton yield and earliness index in populations I and II under late planting. Seed cotton yield/plant was highly affected directly by number of bolls/plant and boll weight.
The study released superior families adapted to late planting such as:
1- In population I. the study isolated six superior families, one family of them no. 58 surpassed the better parent by 66.5% for seed cotton yield and 60.8% for lint yield and five families no. 58, 165, 184, 198 and 246 surpassed for seed cotton yield, lint yield and earliness index from the commercial variety Giza 86 .
2- In population II, families no. 100, 186, 282, 304 and 313 were superior than the better parent and commercial variety for seed cotton yield, lint yield and earliness index under late planting.
Continues of selection and evaluation in the best families to give a promising lines. Entry of these lines in cotton breeding programs give an opportunity for the breeders to select new cultivars adapted to the stress (late planting).