Estimation of Heritability in F2 Generation of Bread Wheat (TriticumaestivumL.)

Autor: Muhammad Rafiq, Wahid Dino Sipio, Mir Muhammad Nizamani, Jawed Aslam Khyber, Waqar Sahar, Faiza somro, Anum Mehmood, Feroz Gul Nizamani, Raza Ali Rind, Rashid Ali dayo, Aamir Ali Khokhar, Arif Hussain Kaleri
Rok vydání: 2019
Předmět:
Zdroj: Indian Journal of Science and Technology. 12:1-14
ISSN: 0974-5645
0974-6846
DOI: 10.17485/ijst/2019/v12i24/144871
Popis: Objectives: To estimate the heritability in a broad sense and the genetic advance F2 generation of bread wheat. Methods/Statistical Analysis: The collected data were statistically analyzed for analysis of variance by Gomez and Gomez, heritability in a broad sense and the genetic advance was worked out after Falconer. Findings: The results showed that genotypes parents, percent x crosses were highly significant at 0.01 level for days to 75% heading, days to 90% maturity, plant height (cm), tiller plant1 , spike length (cm), spikelet spike-1, grain spike-1, grain yield plant-1 (g), Biological yield and harvest index (%) while seed index (1000 grain weight, g) showed non-significant for parents vs crosses. Mean performance of six commercial and F2 hybrids revealed that early heading (62.2) presented by Kiran-95 and his F2 hybrids (59.95%), days to 75% heading taken by Benazir x TD-1, minimum days (114.8) to 90% maturity shown by variety TJ-83, dwarf plant (59.82cm) shown by variety Hamal. The maximum tiller plant-1 (13.76) produced by cross Benazir x TD-1, longer spike length (9.95cm) shown by the variety Kiran-95, while the genotype TD-1 produced maximum number of spikelet spike-1 (20.76), maximum grain spike-1 (56.03) highest grain yield plant-1 (30.53 g) and highest biological yield was obtained from the cross TD-1 x Sindhu. Highest weight for 1000-grain was recorded for TD-1, (50.20). The highest biological yield was shown by Benazir (61.03g). Among the hybrids, higher grain yield plant-1 displayed by Sindhu x Kiran-95, within the F2 population maximum harvest index of 56.45% was observed in Sindhu x TJ-83. The cross Benazir x TD-1 showed higher heritability for tiller plant-1, spike length, spikelets spike-1 and harvest index. While Benazir x Sindhu exhibited higher heritability for grain spike-1, plant height. Variety TD-1, Kiran-95, and Sindhu may be selected in further breeding programs and crossed Benazir x TD-1 could be evaluated in the subsequent generation and selection could be made on spikelets spike-1 and harvest index. Application/Improvements: The variety TD-1 performs better in spikelets spike-1, grains spike-1, grain yield plant-1, seed index, while variety Kiran-95 had higher in spike length, and harvest index. Keywords: Bread Wheat, F2 Generation, Genetic Advance, Heritability
Databáze: OpenAIRE
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