Journal of Pure and Applied MicrobiologyVol. 8 No. Special Edition Nov. 2014

Genetic Studies of Various Morphological Traits in Upland Cotton (Gossypium hirsutum L.)

Muhammad Ashfaq1, Abdul Rasheed2, Muhammad Rizwan2, Muhammad Noor2, Urooj Mubashar3, Husnain Mubashar3, Muhammad Ali1, Amna Ali1, Iqra Saleem1 and Muhammad Sajjad4

1Institute of Agricultural Sciences, University of Punjab, Pakistan. 2Auriga Seed Corporation, 33-KM Multan, Road, Lahore, Pakistan. 3Government Elementary Teachers Education College Ghakkhar Mandi, Gujranwala, Pakistan. 4Department of Environmental Sciences, COMSAT Institute of Information Technology, Vehari, Pakistan.

Received on 09 September 2014 and accepted on 25 October 2014

 

ABSTRACT

A complete diallel cross experiment was conducted involving five cotton (Gossypium hirsutum L.) genotypes viz. SLH-41, F-281, COKER-3113, LA-85-52-1 and H-88-8-J.69-J.70 to explore genetic effects controlling various quantitative traits. Data on major agaronomic traits including plant height, number of monopodial branches, sympodial branches, number of bolls per plant and boll weight were recorded. All the genotypes were found to be significantly different from each other for the above mentioned traits. Joint regression analysis proved the validity of the data of all traits for additive-dominance model. All the traits almost showed over dominant type of gene action while the inheritance of number of sympodial branches was of additive type with partial dominance. Over dominance suggested heterosis breeding as an appropriate tool for improvement of these traits.

Keywords : Diallel analysis; Cotton genetics; Yield parameters; Variation; Gossypium hirsutum L.