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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/15937
Title: | Breeding for high yielding rice (Oryza sativa L.) varieties and hybrids adapted to aerobic (non-flooded, irrigated) conditions — i. Preliminary evaluation of a large number of improved germplasm lines |
Other Titles: | Not Available |
Authors: | C. H. M. Vijayakumar, S. R. Voleti, K. V. Rao, M. S. Ramesha, B. C. Viraktamath and B. Mishra |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | Directorate of Rice Research Hyderabad-30, India |
Published/ Complete Date: | 2006-06-16 |
Project Code: | Not Available |
Keywords: | Aerobic rice, moisture stress, days to heading, grain yield, nearest-neighbor analysis, standardized grid selection |
Publisher: | Indian Society of Genetics & Plant Breeding |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | During wet season 2003, over 2600 improved germplasm lines, including 600 drought tolerant introgression lines, 800 indica/tropical japonica derivatives and 800 hybrid rice (Oryza sativa L.) breeding materials were screened in a puddted field (clay soil) under non-fiooded, irrigated (aerobic) conditions with Rasi and Vandana as check varieties. The checks, known for their water stress tolerance were pianted at regular intervals (after every ten entries) to serve as controls. In both the checks, within as well as between the strips, there was no variation for days to heading, whereas a significant variation was found for grain yield character. Apart from visual selection, three different methods utilizing appropriate statistics were employed for identifying promising genotypes. Among the three methods studied, the bias due to overestimation of strip mean of the check variety (method 1) and identification of false positives by nearest-neighbor analysis (method 2) were eliminated by adopting standardized grid selection precedure (method 3). Further, it was found to be very consistent and effective and therefore a suitable method for employing in large breeding populations and/over wide range of environmental variations in the experimental field. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Journal |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Indian Journal of Genetics and Plant Breeding |
NAAS Rating: | 6.55 |
Volume No.: | 2 |
Page Number: | 113-118 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/15937 |
Appears in Collections: | CS-IIRR-Publication |
Files in This Item:
File | Description | Size | Format | |
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2006 Ind.J Genet CHM.pdf | 443.58 kB | Adobe PDF | View/Open |
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