GRAIN YIELD AND FILLING PARAMETERS AS AFFECTED BY IRRIGATION SCHEDULE IN BARLEY | ||
| Journal of Plant Production | ||
| Article 5, Volume 27, Issue 7, July 2002, Pages 4389-4398 PDF (1.1 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2002.255602 | ||
| Author | ||
| Kh. A. Moustafa, | ||
| Barley Research Department, Field Crops Research Institute, ARC, Giza, Egypt | ||
| Abstract | ||
| Twelve selected barley genotypes were evaluated under three irrigation regimes to study their response to water stress at the Agric. Exp. Station. King Saud University Riyadh. Saudi Arabia. The genotypes under study consisted of 4 new varieties selected from KSU breeding program, 7 introduced varieties and the recommended cultivar Justo. The three irrigation regimes were scheduled according to the cumulative pan evaporation of 30, 60 and 120 mm and the total amount of water applied during the season was 5000 rn' (W,). 3000 m' (W2) and 1500 m' 0113). The three water regimes were assigned to main plots while the 12 genotypes were allocated to sub- plots of a split plot deSign with 3 replications and the experiment was conducted during 98/1999 and 199912000 seasons. Moisture stress significantly reduced grain yield, days to heading. days to maturity, grain filling period and grain filling rate. Also the differences between genotypes were highly significant. The irrigation regime x genotype was highly significant indicating differential responses of genotypes to water stress. The linear regression coefficients of genotype means on amount of pan evaporation were Significantly negative while four coefficients were not significant. The latter group was considered tolerant; however they were low in yield. Two genotypes were identified as tolerant to water stress. Grain yield was highly correlated with grain filling rate only. | ||
| Keywords | ||
| Barley; irrigation regimes; waters stress; grain filling and grain yield | ||
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