GENOTYPE X SOWING DATE INTERACTION EFFECT ON PRODUCTIVITY PERFORMANCE AND STABILITY OF WHEAT UNDER NEW VALLEY CONDITIONS | ||
| Egyptian Journal of Applied Science | ||
| Volume 40, Issue 7, July 2025, Pages 66-89 PDF (938.93 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejas.2025.450492 | ||
| Abstract | ||
| ABSTRACT Improving wheat productivity in Egypt's newly reclaimed desert lands, such as the New Valley, is vital for national food security. This study was designed to assess both yield performance and yield stability of 14 wheat cultivars (12 bread and 2 durum) when sown at three times (early, optimal, and late) during the 2022/2023 and 2023/2024 growing seasons. Data were collected on earliness, grain yield, and yield components. The analysis consisted of scatter plots, genotype x trait (G×T) biplots, and the multi-trait stability index (MTSI). Grain yield was greatest (approx. 25 ardb/feddan) for the optimal sowing date of November 20th, and early and late sowing reduced yield significantly (by approx. 20% and 39%, respectively). Consequently, mid-to-late November is the optimal sowing date. 'Misr 2' and 'Misr 4' were the highest yielding cultivars. The cultivars 'Sids 12', 'Sakha 95', 'Misr 1', and 'Misr 3' were identified as the most stable. Notably, the early maturing 'Sakha 96' performed better under late sowing, suggesting it is a valuable option for delayed planting dates. | ||
| Keywords | ||
| Key Words: Wheat; Bread; Durum; Sowing dates; Grain yield; Adaptability and Multi-traits stability | ||
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