Work

Genetic architecture of yield and yield contributing traits in chickpea (Cicer arietinum L.)

Year: 2024

Type: article

Abstract: Genetic architecture of yield and yield contributing characters of five crosses in chickpea were performed by generation mean analysis. Non-significant χ 2 values were noted for plant weight at harvest (PWH), number of pods per plant (NPd/P) and number of seeds per plant (NS/P) in cross-2; for number of secondary branches at first flower (NSBFF) and number of secondary branches at maximum flower (NSBMF) in cross-3 and for number of primary branches at maximum flower (NPBMF) in cross-4. Among these, PWH in cross-2; NSBFF and NSBMF in cross-3 and NPBMF in cross-4 were also non-significant regarding C and D scales. Non-significant scale coupled with non-significant χ 2 values indicated only additive-dominance relationship for those characters and crosses that would likely be helpful in doing successful breeding plan easily for the development of potential lines in chickpea. Gene effects viz., additive [d], dominance [h], additive × additive [i] and dominance × dominance [l] were significant for different crosses and characters indicating involvement of additive, dominance, additive × additive and dominance × dominance gene interactions in the control of these traits. Most of the studied characters exhibited duplicate type of epistasis therefore, recurrent selection for these traits is suggested. Effective factor (K 1 ) was less than one for all the characters and crosses indicating minimum one group of gene controlled the characters. Both broad (h 2 b ) and narrow (h 2 n ) sense heritability in majority cases were found to be high which indicates that selection for high heritability showing traits is likely to be effective. Mid-parent (MP) and better-parent (BP) heterosis found to be non-significant in maximum cases. All the characters and crosses showed non-significant inbreeding depression (ID) indicating a good sign for further genetic work.

Source: Discover Agriculture

DOI: 10.1007/s44279-024-00063-w

Authors: A. C. Deb, M. T. Hasan

Institution: University of Rajshahi

Language: English

Topic: Genetic and Environmental Crop Studies

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: gold

Estimated APC paid: $1,290