Chief Editor:

V. Geethalakshmi

Tamil Nadu Agricultural University Coimbatore, INDIA

Frequency:Monthly

Indexing:

BIOSIS Preview, ISI Citation Index, Biological Abstracts, Elsevier (Scopus and Embase), AGRICOLA, Go...

AGRO-PHYSIOLOGICAL TRAITS FOR SCREENING HEAT TOLERANT LINES OF WHEAT (Triticum aestivum L.) UNDER LATE SOWN CONDITIONS

D. S. Gill

Affiliations

¹Department of Botany Punjab Agricultural University, Ludhiana-141001, India

Submitted|
First Online |
doi

Cite article:- Gill S. D. (2025). AGRO-PHYSIOLOGICAL TRAITS FOR SCREENING HEAT TOLERANT LINES OF WHEAT (Triticum aestivum L.) UNDER LATE SOWN CONDITIONS. Indian Journal of Agricultural Research. 43(3): 211-214. doi: .

ABSTRACT

A field experiment was conducted during rabi (winter) season. Five wheat cultivars
(PBW-343, WH-542, PBW-502, PBW-509 and Raj-3765) sown on six dates of sowing
starting from 31st October at weekly interval upto 5th December to find out suitable
thermotolerance traits and genotypes. Amongst eleven traits recorded at different
growth stages, largest variability was observed in crop growth rate (CGR), partitioning
to spike, grain spike weight ratio (GSWR), spike growth duration (SGD), cumulative
growing degree days (GDD) accumulated during vegetative and reproductive
phenophases and grain yield at maturity. The highest grain yield was correlated with
longer spike growth duration, partitioning higher crop growth rate and grain spike
weight ratio at anthesis phase. The results revealed that cumulative growing degreedays
(GDD) accumulated more during the reproductive phases as compared with
the vegetative phases of wheat cultivars. The GDD is the effective selection criteria
for screening thermotolerant lines of wheat.

KEYWORDS

REFERENCES

Al-Khaatib, K. and Paulsen, G.M. (1994). Physiol. Plant., 61 : 363-68.
Ashraf, M.Y. and Bhatti, A.S. (1998). Wheat Inf. Serv., 46 : 46-48.
Fernandez, G.C. (1993) Proc. International Symposium, 13-18 Aug, 1992. AVRDC Taiwan, pp 257-270.
Kichar, M.L. and Niwas, R. (2007). Indian J. Agric. Res. 41(2) : 92-96.
Nuttonson, M.Y. (1955). Amerian Inst. Crop Ecol, Washington DC. pp 388.
Randhawa, A.S. et al. (1992). Indian J. Genet. 52 : 161-163.
Siddique, K.H.M. and Wham, B.R. (1994). Euphytica 73 : 241-254.

Disclaimer :

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.

Copyright :

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.