Performance and gene effects for wheat yield under inoculation of arbuscular mycorrhiza fungi and Azotobacter chroococcum
Singh, R(Haryana Agricultural Univ., Hisar (India). Dept. of Plant Breeding)E-mail:[email protected] | Behl, R.K.(Haryana Agricultural Univ., Hisar (India). Dept. of Plant Breeding) | Singh, K.P.(Haryana Agricultural Univ., Hisar (India). Dept. of Plant Breeding) | Jain, P.(Haryana Agricultural Univ., Hisar (India). Dept. of Plant Breeding) | Narula, N.(Haryana Agricultural Univ., Hisar (India). Dept. of Plant Breeding)
The aim of this study was to evaluate the impact of arbuscular mycorrhiza fungi (Glomus fasciculatum, AMF) alone or in combination with Azotobacter chroococcum (AMF + Azc) on the magnitude and direction of gene effects and on some morphological and productivity traits in three wheat cultivars and several generations of their crosses as follows: WH 147, WH 533, Raj 3077, WH 147 x WH 533, WH 533 x Raj 3077, and WH 147 x Raj 3077. The application of AMF and AMF + Azc had a positive effect on plant height, peduncle length, grain yield, biological yield and harvest index in various populations of all the crosses. Additive-dominance gene effects were mainly operative in governing expression of peduncle length, tillers per plant, plant height, grains/spike, grain yield. The application of bio-inoculants influenced gene effects especially for days to flowering, days to maturity, flag leaf area, spike length, grains/spike, thousand grain weight and harvest index. Duplicate epistasis was important in all the three crosses for days to flowering and harvest index.
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