Full Research

Heterosis Manifestation in Rice (Oryza sativa L.) Hybrids under Water Limited Rainfed Condition

Abhinav Jain, Devendra Payasi, K. R. Kamalnath Reddy and V. Shenoy

  • Page No:  480 - 485
  • Published online: 07 Dec 2014
  • DOI : 10.5958/0976-4038.2014.00599.5

  • Abstract
  •  abhinavj19@rediffmail.com

The three-line hybrid system involving cytoplasmic male sterile A- line, maintainer B-line and restorer R-line is a common approach for hybrid development in rice. The hybrids developed through this technique has been successful in increasing the rice production under favourable irrigated condition but hybrids under water-limited rainfed condition has not been much evaluated. Hybrids developed for non-irrigated rainfed lowland environment can help in sustaining the rice production under decreasing water and land resources. The emphasis therefore should be given for developing improved hybrids specifically suited for unfovourable water limited rainfed conditions. Keeping this in view, F1 crosses were generated using line x tester mating design to evaluate rice hybrids under rainfed stress. Assessment of heterosis in 64 F1 cross combination under water-limited rainfed condition revealed scope of exploiting hybrid vigour and developing heterotic hybrids for non-irrigated rainfed lowland environment. Significant standard heterosis over commercial hybrid checks (KRH 2 and PA 6444) observed in many cross combinations for various traits viz., filled grain per panicle, spikelet fertility percent, grain yield per plant, biomass per plant and harvest index highlight the importance of these traits in selecting parents based on above traits and developing hybrids with drought tolerance and high yield for water limited rainfed lowland ecology

Keywords :   Drought stress, heterosis, rice, yield


Cite

1.
Jain A, Payasi D, Reddy KRK, Shenoy V. Heterosis Manifestation in Rice (Oryza sativa L.) Hybrids under Water Limited Rainfed Condition IJBSM [Internet]. 07Dec.2014[cited 8Feb.2022];5(1):480-485. Available from: http://www.pphouse.org/ijbsm-article-details.php?article=492

People also read

Short Research

Bio-efficacy of Modern Acaricides against Chilli Mite, Polyphagotarsonemus latus Banks

S. Sarkar, S. Patra, M. K. Biswas, B. C. Das and A. K. Biswas

Bio-efficacy, acaricides, chilli, Polyphagotarsonemus latus, clofentezine

Published Online : 07 Dec 2014

Short Research

Bioconversion of Low Quality Lignocellulosic Agricultural waste into Edible Protein by Pleurotus djamor (Rumph) Boedijn

Praneet Chauhan and Dharmesh Gupta

Pleurotus djamor, substrates, biological efficiency, supplements, spawn run 

Published Online : 07 Feb 2015

Short Research

Effect of Water Stress on Yield and Seed Quality of Coriander (Coriandrum sativum L.)

Priyanka Thakur and Anju Thakur

Biological yield, dry matter index, harvest index (HI)

Published Online : 07 Feb 2018

Indigenous Bio-resource

Genetic Variability in Indigenous Brinjal Land Races of Dimapur District of Nagaland and their Traditional Cultivation Practices

Raktim Ranjan Bhagowati and Sapu Changkija

Brinjal, land races, Nagaland, variability, morphology, fruit types

Published Online : 07 Jun 2010

General

In Memoriam, Norman Borlaug

Jorge Isaac Sarquís-Ramírez

Norman Borlaug, CIMMYT, dwarf wheat, green revolution

Published Online : 07 Jun 2010