Relationships of some growth characteristics on yield of physic nut (Jatropha curcas L.) elite clones
2010
Auttapon Rukkaphan(Kasetsart University, Bangkok (Thailand). Faculty of Science. Department of Botany) E-mail:[email protected] | Lily Kaveeta(Kasetsart University, Bangkok (Thailand). Faculty of Science. Department of Botany) | Malee Na Nakorn(Kasetsart University, Bangkok (Thailand). Faculty of Science. Department of Botany) | Rangsarid Kaveeta(Kasetsart University, Bangkok (Thailand). Faculty of Agriculture. Department of Agronomy)
Relationship between some growth characteristics and yield of 10 elite clones of physic nut (Jatropha curcas L.) were investigated by using the seedling and cutting methods under natural conditions of dry and rainy season. Some growth characteristics were collected at 120 and 240 days after planting (planting season). Yield and yield components were also harvested at 480 days after planting. The results showed that plants from seedling method had more number of days to first flowering than those from cutting method, and dry season was also more days than in rainy season. Negative correlation between days to first flowering and plant height of cutting method in dry season and seedling method in rainy season were observed. Plants in rainy season gave higher seed weight per plant than those in dry season, and plants from cutting showed higher seed weight than plants from seedling in both seasons. The selected elite clones significantly differed in seed dry weight per plant. Their seed weight per plant from seedling and cutting methods were positively correlated with plant height, plant diameter and total number of branches in dry season, and were positively correlated with number of fruit cluster per plant, number of fruits per fruit cluster, number of fruits per plant, number of seed per plant and seed weight per plant in both planting seasons.
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