Tuber-pod competition and drought responses in yam bean (Pachyrhizus ahipa (Wedd.) Parodi)
An experiment was conducted under greenhouse conditions in order to examine the effect of inflorescence pruning on drought responses of the cultivar AC102 (#Pachyrhizus ahipa# (Wedd.) Parodi). Four treatments involving plant with or without reproductive pruning and with and without water stress and the combination of the two factors were included in the experiment. Drought caused a decrease in stomatal conductance, photosynthesis and transpiration rates in both intact and pruned plants. However, whilst leaf-relative-water content (LRWC) was maintained in the pruned plants (P+D), a significant decrease was observed in the intact plants (I+D). The maintenance of LRWC in pruned plants may be due to mobilisation of water within the tuber and/or better redistribution of water from roots to leaves in the absence of pods. Inflorescence pruning improves the adaptation of this crop to drought conditions.
| Main Authors: | , , |
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| Format: | conference_item biblioteca |
| Language: | eng |
| Published: |
DSR Boghandel
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| Subjects: | F60 - Physiologie et biochimie végétale, Pachyrhizus, légume racine, adaptation, sécheresse, taille, inflorescence, teneur en eau, http://aims.fao.org/aos/agrovoc/c_5486, http://aims.fao.org/aos/agrovoc/c_6647, http://aims.fao.org/aos/agrovoc/c_117, http://aims.fao.org/aos/agrovoc/c_2391, http://aims.fao.org/aos/agrovoc/c_6274, http://aims.fao.org/aos/agrovoc/c_3858, http://aims.fao.org/aos/agrovoc/c_4886, http://aims.fao.org/aos/agrovoc/c_6970, |
| Online Access: | http://agritrop.cirad.fr/468049/ http://agritrop.cirad.fr/468049/1/ID468049.pdf |
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