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| Genetic Variability Analysis of Some Quantitative Traits in F3 Populations of Inter Specific Crosses in Bread Wheat
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Muhammad Azam, Abdul Mateen, Syed Abdul Malik, Syed Shamsullah, Ikhlaq Ahmed, Muhammad Zahid, Khalid Iqbal, Muhammad Naeem, Bismillah khan kakar, Sakhawat ali, Muhammad Ishaq shah, Rafiq Ahmed and Khalil ahmed.
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Abstract:
Wheat, botanically known as Triticum aestivum L. is most important staple diet belonging to family Poaceae. The present research was aimed to study the genetic variability of wheat (Triticum aestivum L.) in F3 populations, conducted at the experimental field of Agriculture Research Institute, Quetta in cropping season of 2017 by following Randomized Complete Block Design (RCBD) with three replications. The objective of the experiment was to evaluate the performance of bread wheat parental lines and F3 populations to identify heredity and selection response for yield and its contributing parameters. According to mean performance of comparative study between parent lines and their F3 population, minimum days to heading was noted in parent Zarghoon 79, minimum days to maturity was noted in parent Faisalabad-85, maximum grain yield plant-1 was observed in parent PR-102, maximum number of grain spike-1 were counted in parent PR-102, maximum height was scaled in Pir-sabaq 2010 and maximum 1000 grain weight was weighed in PR- 102 × Zarghoon 79,maximum tillers plant-1 was counted in Raskoh 2005 × Zarghoon 79. Moreover, according to heterosis and heterobeltiosis, highest heterobeltiosis for days to heading exhibited by Zarghoon 79 × Raskoh and the greatest heterobeltiosis for days to heading was showed by Zarghoon 79 × Raskoh, best heterosis and heterobeltiosis fornumber of grain spike-1 revealed by Faisalabad 85 × Zardana 89, greater heterosis and heterobeltiosis for grain yield plant-1 was exhibited by Faisalabad 85 × Zardana 89. Highest negative heterosis for tiller plant-1 was depicted by PR-102 × Zarghoon 79, as well as highest negative heterobeltiosis for number of tiller plant-1, highest heterosis as well as the highest heterobeltiosis estimate for days to maturity revealed by PR-102 × Raskoh 2005. Therefore, the study suggested that the parent PR-102 and cross Faisalabad 85 × Zardana 89 identified as novel germplasm can be used in further breeding programs for better wheat crop stand.
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