Effects of fruiting on plant growth and distribution of dry matter in okura (Abelmoschus esculentus)
2003
Rithichai, P. (Kyoto Prefectural Univ. (Japan)) | Fujime, Y. | Sukprakarn, S. | Terabayashi, S. | Okuda, N. | Date, S.
'Green Rocket' okra plants were cultivated in the glasshouse under natural conditions. The purpose of this study was to investigate plant growth and the distribution of dry matter among plant organs during fruiting in okra. The appearance of flower buds occurred at 25 DAS (days after sowing). Flower buds were initiated at the fourth node and it appeared continuously at the upper nodes. The first flowers opened at 45 DAS and fruiting occurred one day later. Okra fruits were formed continuously. The number of unfolded leaves and leaf area increased as the plants grew further. But it decreased at 70 DAS. Stem and leaf dry matters increased gradually during 30 to 60 DAS. But they declined during 60 to 70 DAS. Root dry matter increased steadily throughout the experiment. The increase of root dry matter, however, was reduced in rate when fruits were formed during 50 to 70 DAS. Fruit dry matter increased rapidly during 50 to 70 DAS. Top : root ratio fluctuated in the range of 4.2 to 6.7. Based on these results, it was thought that fruit load strongly affected growth of stem, leaves and root of okra.
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