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HYBRID VIGOR IN COTTON AS INFLUENCED BY TWO IRRIGATION INTERVALS | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 44, Issue 1, 2013, Pages 43-57 | ||
| Authors | ||
| Musaab A. Yassir; Layla I. Mohemmed | ||
| Abstract | ||
| A field experiment was carried out during 2010-2012 at the experimental field of Crop Science Dept. – College of Agriculture – Abu-Graib. This was to evaluate genotypes under water stress conditions and attempt to breeding of hybrids for tolerant of this stresses, with higher yield capacity. However estimate of heterosis. Five varieties of cotton included Cocker-310, Dise, Macneer, Marsoomi-5 and Rabeaa-122 were crossed, during the season of 2010 using half diallil. The traits for 10 single crosses and 5 parents were tested during 2012 using RCBD design under split plot arrangement with three replications, irrigation treatments occupied main plot included irrigation weekly and at two weeks and subplot.The Results showed that irrigation at two weeks produced highest seed cotton yield (104.36 g.plant-1), lint yield (21.64g.plant-1) and no. of open bolls (43.2). Significant differences were found among genotypes for all characteristics studied. The parent Macneer were attained highest seed cotton yield account 102.02 g.plant-1, also, crosses (Dise x Macneer) and (Cocker-310 x Rabeaa-122) were gave higher seed cotton yield (111.75 and 110.21 g.plant-1 respectively) attribute to higher contribute of boll weight and no. of open boll per plant. However, Cross(Cocker-310 x Rabeaa-122) showed high hybrid vigor of seed cotton yield (22.06%) and boll weight (52.10%) under irrigation at two weeks. It could be conclude to dependent on irrigation at two weeks that attained higher values seed cotton yield, lint yield, boll weight and no. of open balls. Also can be grown Marsoomi-5 variety that showed higher performance of seed cotton yield and lint yield under water stress conditions. Crosses (Marsoomi-5 x Rabeaa-122) and (Cocker-310 x Rabeaa-122) gave higher values of seed cotton yield and no. of open balls at the water stress conditions. | ||
| Keywords | ||
| Hybrid vigor; Irrigation intervals; Half diallel; Genotypes; Seed cotton yield | ||
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