Evaluation of some promising sweet potato clones for early maturity

B. Vimala and Binu Hariprakash
2011 Electronic Journal of Plant Breeding  
Early maturity studies were carried out with 8 high yielding clones for 3 seasons. The harvesting was done at 75, 90 and 105 days after planting (DAP). At 75 days, the yield of three clones ranged from 12 - 14 t ha-1 and at 90 days, 20 – 26 t ha-1. At 105 days, only one clone had higher yield. Dry matter content analysis indicated that it varied from 24 – 32% and 28- 38 % at 75 and 90 days. At 105 days no significant difference was observed in the dry matter. However, in some clones it was less
more » ... than at 90 days. The yield and dry matter analysis at the early growth stages helps to screen a large number of progenies and to identify high yielding clones in a breeding programe. Considering the above factors, it is worthwhile to harvest the storage roots of most cultivars at around 90-100 days after planting.
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