1. STUDIES ON RELATIVE HETEROSIS AND HETEROBELTIOSIS FOR FOUR QUANTITATIVE CHARACTERS- GRAIN YIELD PER PLANT , STRAW YIELD PER PLANT , TOTAL BIOLOGICAL YIELD PER PLANT AND HARVEST INDEX IN RICE (ORYZA SATIVA L.) by GIRISH CHANDRA TIWARI

Authors

  • GIRISH CHANDRA TIWARI

Abstract

Ten diverse genotypes of rice (Oryza sativa L.) were crossed in a diallel fashion to study heterosis for 12 quantitative characters. In which for grain yield per plant all the 45 hybrids exhibited positive significant heterosis over mid parent and 37 hybrids exhibited positive significant heterosis over better parent. For straw yield per plant out of 45 crosses, 44 exhibited positive significant heterosis over mid parent and 42 exhibited positive significant heterosis over better parent. For total biological yield per plant out of 45 hybrids , 43 crossses exhibited positive significant heterosis over mid parent and 31 hybrids exhibited significant positive heterosis over better parent. For harvest index out of 45 crosses 25 showed significant positive heterosis over mid parent and 20 hybrids exhibited significant positive heterosis over better parent. The estimate of relative heterosis and heterbeltiosis provide information about the type of gene action involved in expression of various quantitative characters. The information of gene action helps in the selection of breeding methods for genetic improvement of the population.

KEY WORDS: - Better parent, Mid parent, Heterobeltiosis, Relative heterosis. 

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Author Biography

GIRISH CHANDRA TIWARI

STUDIES ON RELATIVE HETEROSIS AND HETEROBELTIOSIS FOR FOUR QUANTITATIVE CHARACTERS- GRAIN YIELD PER PLANT , STRAW YIELD PER PLANT , TOTAL BIOLOGICAL YIELD PER PLANT AND HARVEST INDEX IN RICE (ORYZA SATIVA L.)
GIRISH CHANDRA TIWARI
DEPARTMENT OF PLANT BREEDING & GENETICS, PND AGRICULTURE COLLEGE, GAJSINGHPUR 335024
AFFILIATED WITH SKRAU BIKANER
DISTRICT-SRI GANGANAGAR (RAJASTHAN) INDIA-335024.
Corresponding author’s e-mail: girishtiwari2012@gmail.com

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Published

2015-12-01

How to Cite

CHANDRA TIWARI, G. (2015). 1. STUDIES ON RELATIVE HETEROSIS AND HETEROBELTIOSIS FOR FOUR QUANTITATIVE CHARACTERS- GRAIN YIELD PER PLANT , STRAW YIELD PER PLANT , TOTAL BIOLOGICAL YIELD PER PLANT AND HARVEST INDEX IN RICE (ORYZA SATIVA L.) by GIRISH CHANDRA TIWARI. LIFE SCIENCES LEAFLETS, 70, 1 to 8. Retrieved from https://petsd.org/ojs/index.php/lifesciencesleaflets/article/view/965

Issue

Vol. 70 (2015): December, 2015.....ISSN 0976 - 1098(On Line) ISSN 2277 - 4297(Print)

Section

Research Paper

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