Abstract
The current experiment was conducted to evaluate the genetics for earliness and yield traits in upland cotton (Gossypium hirsutum L.) during Kharif season 2013 at Cotton Section, Agriculture Research Institute, Tandojam. The experiment was laid out in a randomized complete block design with three replications. The experiment consisted of fifteen genotypes in which ten F1 were developed from five parents crossed in a 5 x 5 diallel matting design for days to 1st flower, bolls formed at 90 days after planting, bolls opened at 90 days after planting, plant height (cm), sympodial branches plant-1, bolls plant-1, boll weight (g) and seed cotton yield plant-1 (g). The genotypes were significantly different (P≤0.05) for days to 1st flower, bolls formed at 90 days after planting, bolls opened at 90 days after planting, plant height, sympodial branches plant-1, bolls plant-1 and seed cotton yield plant-1. Among the genotypes, Sindh-1, CRIS-134 and Shahbaz were best general combiners for days to 1st flower, bolls formed at 90 days after planting, bolls opened at 90 days after planting, plant height, sympodial branches plant-1, bolls plant-1, boll weight and seed cotton yield plant-1. The F1 hybrids Sadori x Sindh-1, Shabaz x Haridost, Sadori x CIM-496 were best specific combiners for all the characters studied. The F1 hybrids Shahbaz x Sindh-1, Sadori x Sindh-1, Sadori x Haridost and Sadori x CIM-496 gave higher heterotic effects for all the studied traits. Keywords: Earliness; Diallel; Seed cotton yield; Upland cotton; Earliness traits http://dx.doi.org/10.19045/bspab.2017.60008
Highlights
Introduction countryCotton is principal component of Cotton occupies a unique position in Pakistan’s economy owing to its 69% sharePakistan's agrarian economy
Shahbaz were best general combiners for days to 1st flower, bolls formed at 90 days after planting, bolls opened at 90 days after planting, plant height, sympodial branches plant-1, bolls plant-1, boll weight and seed cotton yield plant-1
Materials and methods The study was conducted during Kharif season of 2013 at Cotton Section, Agriculture Research Institute, Tandojam in randomized complete block design with three replications to evaluate genetics for earliness in upland cotton (Gossypium hirsutum L.)
Summary
Introduction countryCotton is principal component of Cotton occupies a unique position in Pakistan’s economy owing to its 69% sharePakistan's agrarian economy. Efforts on in foreign exchange earning, 7.5% value various aspects of the crop have been under addition in agriculture and 1.6% in GDP It way to increase overall production of the contributes about 78% in domestic oil Published by Bolan Society for Pure and Applied Biology production. It is a powerful source for our economic growth because it plays an efficient role in enhancing the national economy by earning a huge share of the total foreign exchange. The primary objectives of this study were to determine the genetic potential in upland cotton cultivars, such information can usefully be subjugated in articulating efficient selection program for synthesis and development of new cotton genotypes with improved traits for earliness and seed cotton yield. Cotton seeds were sown by dibbling method, plant to plant and row to row distance was kept 30 and 75 cm, respectively
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