Bagnall, D.J. and King, R.W. (1991) Response of peanut (Arachis hypogaea) to temperature, photoperiod and irradiance 1. Effect on flowering. Field Crops Research, 26 (3-4). pp. 263-277.
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Abstract
A series of trials was conducted in phytotron greenhouse units using groundnuts cv. Red Spanish, Chico, TMV2 and White Spanish (Spanish types), Robut 33-1, Q18164, Early Bunch, VB223 and NC17209 (Virginia types), and Q18657, Q18636 and Q18660 (Valencia types). The time to 1st flower appearance was little affected by photoperiod but the number of flowers produced was significantly enhanced in short-day photoperiods. Over 14 d, twice as many flowers opened in a 10-h as in a 16-h photoperiod, thus groundnuts could be classified as a short-day plant. Temp. had a major and positive effect on time to 1st flower. A linear thermal-time model adequately described 1st flower appearance if av. temp. >30°C were excluded. The spanish cultivars had a higher base temp. (approx. 13.6°) than Valencia (12.5°) or Virginia types (11.4°). Over a wider temp. range quadratic curves were more accurate representations of time to 1st flower. The extrapolated base temp. from curves were 2-3° higher than those from straight line fits. Photon flux density (Q) close to saturating for photosynthesis gave earliest 1st flowering, and photoperiod effects could be seen only at very low Q.
| Item Type: | Article |
|---|---|
| Additional Information: | SNNigam Collection |
| Author Affiliation: | CSIRO Division of Plant Industry, Canberra, ACT 2601, Australia |
| Subjects: | Plant Production Crop Improvement Plant Physiology and Biochemistry > Biochemistry |
| Divisions: | Groundnut |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 08 Jul 2013 12:36 |
| Last Modified: | 08 Jul 2013 12:36 |
| Official URL: | http://dx.doi.org/10.1016/0378-4290(91)90004-F |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10957 |
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