Evaluation of synthetic hexaploid wheat (Triticum aestivum) derived RILs for kernel traits

VASUDHA JADON; DEEPSHIKHA DIXIT; KARIKALAN JAYARAMAN; KUSUMA KUMARI PANDA; SHASHI SHARMA; HARI KRISHNA; PRADEEP KUMAR SINGH; GOPALAREDDY KRISHNAPPA; GYANENDRA PRATAP SINGH

doi:10.56093/ijas.v92i10.125217

Authors

VASUDHA JADON Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh
DEEPSHIKHA DIXIT Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, 201 313 India
KARIKALAN JAYARAMAN ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi
KUSUMA KUMARI PANDA Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, 201 313 India
SHASHI SHARMA Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, 201 313 India
HARI KRISHNA ICAR-Indian Agricultural Research Institute, New Delhi
PRADEEP KUMAR SINGH ICAR-Indian Agricultural Research Institute, New Delhi
GOPALAREDDY KRISHNAPPA ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana
GYANENDRA PRATAP SINGH ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana

https://doi.org/10.56093/ijas.v92i10.125217

Keywords:

Kernel size, Kernel length, Synthetic hexaploid wheat, TKW, Yield potential

Abstract

In bread wheat (Triticum aestivum L.), kernel parameters are significant grain quality characteristics that affect yield and milling quality as well as market price. Utilization of synthetic hexaploid donor to harness the diverse alleles for broadening the genetic base is a novel breeding strategy of the bread wheat breeding programs across the globe. An experiment was conducted during winter (rabi) season 2017–18 and 2018–19 at the research farm of ICAR-Indian Agricultural Research Institute, New Delhi to evaluate 188 recombinant inbred lines (RILs) which were derived from HD 2932 (Indian bread wheat cultivar) and Synthetic 46 (Syn 46: Synthetic hexaploid donor) to identify the effect of the synthetic hexaploid donor on kernel parameters. Kernel parameters like kernel length (KL), kernel width (KW), kernel thickness (KT) and thousand kernel weight (TKW) were studied. Syn 46 had larger kernels and a high TKW with respect to HD 2932. Significant variation for all the traits was observed in the population with transgressive segregants. In this RILs population (188) KL ranged from 5.13–7.5 mm, KW ranged of 2.26–3.9 mm, KT ranged from 2.57–3.41 mm, and of TKW ranged from 25.2–53.17 g. Correlation analysis showed a significant positive correlation of TKW with KL and KT. Potential RILs identified with desirable allelic combinations may be used for future breeding programs, and RILs with contrasting kernel parameters may be used to create nested RILs for further generation of variability.

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