Sweeney, F.C. and Hopkinson, J.M. (1975) Vegetative growth of nineteen tropical and sub-tropical pasture grasses and legumes in relation to temperature. Tropical Grasslands, 9 (3). pp. 209-217.
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Abstract
In controlled-environment experiments 19 grasses and legumes were grown at day/night temperatures rising in 3 deg C steps from 15/10 deg to 36/31 deg C and dry weight accumulation during early vegetative growth was recorded. Plants fell into 3 categories in their temperature response, measured in terms of relative whole plant growth rate: (a) those with growth depressed above 30/25 deg , Desmodium uncinatum and D. intortum, all cultivars of Glycine wightii and possibly Chloris gayana; (b) legumes with no demonstrable high-temperature depression, Stylosanthes guyanensis and S. humilis, Calopogonium mucunoides, Pueraria phaseoloides, Macroptilium atropurpureum and Centrosema pubescens; (c) grasses with no demonstrable high-temperature depression and with maximum potential RGR values apparently higher than those of the legumes, Melinis minutiflora, Brachiaria ruziziensis and B. mutica, Cenchrus ciliaris, and cv. Hamil, Common Guinea, and Green Panic of Panicum maximum. Low-temperature depression increased with falling temperature below 30/25 plus or minus 3 deg in all taxa, and at 15/10 deg RGR never exceeded about 33% of the recorded maximum. The ratio of root to total dry weight tended to fall as RGR rose
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Primary Industries, Brisbane, Qld., Australia 4000. |
| Subjects: | Atmosperic Science > Climatology Plant Production Crop Improvement |
| Divisions: | Other Crops |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 23 May 2012 13:23 |
| Last Modified: | 23 May 2012 13:23 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5669 |
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