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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(7): 2716-2726
DOI: https://doi.org/10.20546/ijcmas.2018.707.318


Developing a Selection Criterion for Terminal Heat Tolerance in Bread Wheat Based on Various Mopho-Physiological Traits
Devender Sharma*, J.P. Jaiswal, N.K. Singh, Anjana Chauhan and Navin Chander Gahtyari
Department of Genetics and Plant Breeding, G.B.Pant University of Agriculture & Technology, Pantnagar -263145 (Uttarakhand), India
*Corresponding author
Abstract:

Wheat (Triticum aestivum L.), a staple food crop is of great commercial importance. Its production is restricted due to various abiotic stresses. There are indications that the wheat production is consistently limited by terminal heat stress. Here, performance of forty genotypes of wheat was undertaken for assessment of direct selection parameters (variability, heritability and genetic advance) and their relation with heat tolerance. The plants were sown in late planting (first fortnight of December) to expose them to terminal heat stress. Observations were recorded on fourteen morpho-physiological traits i.e. days to heading, days to maturity, grain filling duration, number of tillers per plant, spike length, grain yield per plant, 1000-kernel weight, CTD-I, CTD-II, CTD-III, NDVI-I, NDVI-II, NDVI- III and membrane thermostability. High heritability associated with high genetic advance reflected for physiological traits like canopy temperature depression and membrane thermostability. That indicated effectiveness of selection for the improvement of these traits. Moderate estimate of genetic advance (25%-50%) exhibited for number of tillers per plant, NDVI I, CTD (I & II) and spike length. For all the morpho-physiological traits studied, the estimates of phenotypic variance were exhibited higher than their corresponding genotypic variances, indicating the influence of environment on the expression of these morpho-physiological characters were observed. These finding suggests the relative importance of various physiological traits in formulating the selection criteria for developing thermotolerant wheat cultivars.


Keywords: Wheat, heat stress, Canopy temperature depression; membrane thermostability,
1000 Grain Weight, Normalizes Difference Vegetation index
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How to cite this article:

Devender Sharma, J.P. Jaiswal, N.K. Singh, Anjana Chauhan and NavinChanderGahtyari. 2018. Developing a Selection Criterion for Terminal Heat Tolerance in Bread Wheat Based on Various Mopho-Physiological TraitsInt.J.Curr.Microbiol.App.Sci. 7(7): 2716-2726. doi: https://doi.org/10.20546/ijcmas.2018.707.318