Phenotypic divergence for agro-morphological traits among landrace genotypes of rice (Oryza sativa L.) from Pakistan
2004
Zafar, N. | Aziz, S. (Quaid-i-Azam Univ., Islamabad (Pakistan). Dept. of Biological Sciences) | Masood, S.
Landrace genotypes of rice collected from various parts of Pakistan were evaluated for seven quantitative and eight qualitative characters. A significant amount of genetic variation was displayed for most of the traits examined. The coefficient of variation was more than 10% for all the characters with the exception of grain length. Compared with the modern cultivars, the Landrace genotypes were, on average, later in heading and maturity but had lower values for panicle and grain length. Days to heading was positively correlated with maturity (r = 0.838) and grain length (r = 0.452). Plant height showed positive and significant correlation with panicle length (r = 0.452) indicating the importance of plant height in improving panicle length. Seven accessions with best performance for individual character were identified. To exploit their genetic potential, these genotypes can beneficially be used in the breeding programs.
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