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Updated: 09-12-10

EXPLORING HETEROSIS FOR SEED COTTON YIELD  IN UPLAND COTTON UNDER DIFFERENT IRRIGATION REGIMES

MUHAMMAD HUSSAIN SOOMRO*, GHULAM SARWAR MARKHAND AND AMEER AHMED MIRBAHAR¹

Abstract: An experiment during the years 2003 and 2004 was conducted to explore the Heterosis in 15 F₁ hybrids along with the performance of 6 parents regarding seed cotton yield per plant under 3 irrigation treatments (2, 4 and 7 irrigations). Results revealed that statistically all the parents and hybrids exhibited significant variation among them. Parents Marvi, CRIS-134 and CRIS-52 showed better performance regarding seed cotton yield per plant under all the three irrigation treatments. Hybrids Marvi x CRIS-134, Marvi x CRIS191 and CRIS-52 x CRIS-191 showed positive and constantly higher heterosis estimates over mid and better parent values under all the three irrigation treatments. Thus these parents viz., Marvi, CRIS-134 and CRIS-52 are recommended for sowing in the areas where there is shortage of water. Further these parents may be utilized extensively to develop above three specific hybrids for sowing in drought conditions and also for development of commercial varieties resistant to drought for Sindh province.

Department of Botany, Shah Abdul Latif University, Khairpur, Sindh, Pakistan

¹Plant Tissue Culture & Biotechnology Division, HEJ, Research Institute of Chemistry, University of Karachi, Karachi, Pakistan 

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