Grain-fill characteristics of early maize strains selected for variable R-nj expression
Material type:
ArticleLanguage: English Publication details: Dordrecht (Netherlands) : Springer, 1983.ISSN: - 0014-2336
- 1573-5060 (Online)
| Item type | Current library | Collection | Call number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|
| Article | CIMMYT Knowledge Center: John Woolston Library | Reprints Collection | Available |
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Grain-fill rates and durations were estimated for three early maize (Zea mays L.) strains developed by mass selection for variable R-nj aleurone color expression. Strains selected for high, random, and low color expression were evaluated for rate of dry matter accumulation (RDMA), effective filling period duration (EFPD), and lag period duration (LPD). Strains from cycles 3 and 4 were grown in 1980 and 1981, respectively, to test the hypothesis that selection for variable R-nj expression had changed rate and/or duration of grain-fill. Results indicated that while selection for high R-nj expression increased RDMA and decreased EFPD, low color selection reduced RDMA and increased EFPD. LPD was increased slightly by high color selection. The relationships of these characteristics to previously observed yield, stability, and ear moisture differences among these strains are discussed.
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