Cause-and-effect relationship of yield and its components under cold-stress condition in rice (Oryza sativa)


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Authors

  • J C GUPTA
  • P C KATOCH
  • R P KAUSHIK
  • S L SHARMA

Keywords:

Oryza sativa L., genetic divergence, D2 statistics, cold-stress condition

Abstract

Rice (Oryza sativa L,) genotypes (38) from diverse origin were studied for correlation and path-coefficient analysis
under cold-stress condition for grain yield, using 9 characters, Grain yield was positively correlated with 1 000-grain
weight and negatively with sterility (%) and plant'height. Panicle length, panicle density and sterility(%) were the
main component characters affecting yield directly, High and positive indirect effects were contributed by 1 000-grain
weight and days to flowering through grains/panicle and panicle length respectively, The combined results of correlations
and path coefficients indicated that 1 000-grain weight and days to flowering through grains/panicle and panicle length
respectively. The combined results of correlations and path coefficients indicated that 1 000-grain weight, spikelet
fertility and short pIant height have maximum effect on selection for improvement in grain yield of rice under coldstress
condition.

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Author Biographies

  • J C GUPTA
    Assistant Plant Breeder (Rice),Research Sub-station, Himachal Pradesh Krishi Vishvavidyalaya, Katrain 175 129
  • P C KATOCH
    'Senior Rice Breeder, Research Sub-station, Himachal Pradesh Krishi Vishvavidyalaya, Katrain 175 129

  • R P KAUSHIK
    Rice Breeder, Research Sub-station, Himachal Pradesh Krishi Vishvavidyalaya, Katrain 175 129
  • S L SHARMA
    Rice Breeder, Rice Research Station, HPKV, Malan 176 047,Research Sub-station, Himachal Pradesh Krishi Vishvavidyalaya, Katrain 175 129

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Issue

Vol. 68 No. 1 (1998)

Section

Articles

License

The copyright of the articles published in The Indian Journal of Agricultural Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

GUPTA, J. C., KATOCH, P. C., KAUSHIK, R. P., & SHARMA, S. L. (2013). Cause-and-effect relationship of yield and its components under cold-stress condition in rice (Oryza sativa). The Indian Journal of Agricultural Sciences, 68(1). https://epubs.icar.org.in/index.php/IJAgS/article/view/27176