ORYZA- An International Journal on Rice
Year : 2009, Volume : 46, Issue : 3
First page : ( 250) Last page : ( 253)
Print ISSN : 0474-7615.

Heterosis for quality traits in indica/indica hybrids of rice

Shivani D., Viraktamath B.C., Rani N. Shobha

College of Agriculture, Rajendranagar, ANGRAU, Hyderabad, Andhra Pradesh, India

Abstract

Eighteen indica/indica hybrids produced by crossing three male sterile lines with six restorers were analyzed for various quality traits and mid parent heterosis and heterobeltiosis. For head rice recovery, IR 68886A x IR 21567 registered significant positive relative heterosis and heterobeltiosis. For kernel length only one cross viz., IR 58025A x IR 21567 possessed positive significant mid parent heterosis. Most of the indica/indica hybrids exhibited significant negative heterosis for water uptake and volume expansion ratio. Significant negative relative heterosis was recorded for gel consistency in all the hybrids except for IR 62829A x IR 29723. The relative heterosis and heterobeltiosis for amylose content were found to be negative indicating that the indica/indica hybrids in the present study had their amylose content less than their mid parent and better parent values

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Keywords

rice hybrids, heterosis, heterobeltiosis, quality traits.

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