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Heritability and Selection Response for Grain Yield and Associated Traits in F3 Wheat Populations

Heritability and Selection Response for Grain Yield and Associated Traits in F3 Wheat Populations

Tariq Aziz1, Iftikhar Hussain Khalil1, Quaid Hussain1,3*, Tariq Shah2,3, Nazir Ahmad1 and Amir Sohail1 

1Department of Plant Breeding and Genetics; 2Department of Agronomy, Faculty of Crop Production Sciences, University of Agriculture, Peshawar, Khyber Pakhtunkhwa, Pakistan; 3Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.

quaid_hussain@yahoo.com 

ABSTRACT

Broad sense heritability and selection responses were assessed for grain yield and related traits in 12 F3 populations of wheat got from mating of six advanced lines and two widely cultivated cultivars (Pirsabak-08 and Janbaz) at University of Agriculture, Peshawar during 2013-14. All wheat genotypes (8 parents and 12 F3 populations) showed significant differences for all traits. Cultivar Janbaz had maximum spike length (13.9 cm) and maximum number of grains spike-1 (89.2). Parental line B-IV(N)5 had maximum single spike weight (4.6 g), 100-grain weight (4.6 g) and grain yield (32.0 g plant-1). F3 population B-RF7 × Janbaz had 100-grain weight (4.5 g) and grain yield (31.9 g plant-1). Similarly, F3 population B-RF1 × Janbaz had more single spike weight (4.1 g). Population B-RF3 × Janbaz had maximum spike length (14.5 cm) and number of grains spike-1 (85.1). F3 populations B-RF7 × Pirsabak-08, B-IV(N)5 × Pirsabak-08, B-RF7 × Janbaz, B-IV(N)5 × Pirsabak-08, B-RF7 × Janbaz, B-RF1 × Janbaz, B-IV(N)12 × Janbaz had maximum heritability and selection responses for plant height (0.76 and 10.96 cm), spike length (0.93 and 4.51 cm), grains spike-1 (0.93 and 25.54), single spike weight (0.89 and 3.08 g), 100 grain weight (0.90 and 1.26 g) and grain yield plant-1 (0.75 and 12.15 g), respectively. On basis of high heritability coupled with high selection response for yield related traits, F3 populations B-IV(N)5 × Pirsabak-08, B-IV(N)5 × Janbaz, B-RF1 × Janbaz and B-RF7 × Janbaz should be advanced further for possible development of high yielding wheat cultivars. 

 

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Sarhad Journal of Agriculture

June

Vol. 35, Iss. 2, Pages 320-662

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