Genter, C.F. and Alexander, M.W. (1966) Development and selection of productive S1 inbred lines of corn (Zea mays L.)1. Crop Science, 6 (5). pp. 429-431.
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Abstract
Two recurrent selection series, originating from the same 153 S1 lines, were carried through two complete cycles. Selection was based on testcross yield in one series and on S1 progeny yield in the other. The mean S1 yield increased 31.4% with 2 cycles of selection for S1 yield and 17.9% with 2 cycles of selection for testcross yield. The more productive S1 lines tended to produce the more productive crosses, but the correlation between S1 and testcross yields decreased with each cycle of selection. Four S1 lines from the second cycle synthetic of the series selected for progeny yield were more productive than the original cross-pollinated population. In a second experiment, lines that were derived from the more productive S1 progenies were most frequently maintained under visual selection. Nine of the 10 S1 lines that were still represented after selection in S3 progenies were above average in yield. Seven of the 31 S1 lines that were still represented after selection in S2 progenies produced testcrosses which ranged from 105 to 110% of the trial mean and 6 of these 7 were above average in S1 yield
| Item Type: | Article |
|---|---|
| Subjects: | Plant Production Crop Improvement |
| Divisions: | Other Crops |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 05 Aug 2011 03:30 |
| Last Modified: | 05 Aug 2011 03:30 |
| Official URL: | http://dx.doi.org/10.2135/cropsci1966.0011183X0006... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/2526 |
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