Evaluation of orange fleshed sweet potato genotypes for storage root yield and dry matter content

Publication Date : 04/10/2017

DOI : 10.22623/IJAPSA.2017.3103.LFVRQ

Author(s) :

aswathy gh nair , Vidya P , Ambu Vijayan , J. Sreekumar , C. Mohan.

Volume/Issue :
Volume 3
Issue 9
(10 - 2017)

Abstract :

Sweet potato (Ipomoea batatas (L.) Lam) is the seventh most important food crop in the world. In many developing countries, sweet potato is used as a staple food crop because of easy propagation, high yield and rich in nutrient content under varied climatic conditions. Orange fleshed sweet potato (OFSP), in particular produces storage roots rich in β-carotene, a precursor of Vitamin A. Therefore, OFSP is a promising genotype to address the Vitamin A deficiency needs of women & children and to prevent malnutrition in poverty & tribal areas. OFSP varieties are important in Africa and other developing countries to reduce night blindness. A total of forty OFSP genotypes were selected and yield trials were conducted in two different seasons, kharif season (May-July) and rabi season (Sep-Nov) in 2011. The total yield and dry matter content of the tubers was estimated immediately after harvest and the data obtained from the two seasons were compared. From the result it was found that the rabi season is more favourable for total tuber yield production. The genotype, ST-14/47 has recorded highest tuber yield of 27.19 t ha-1 with 24% dry matter. Dry matter content of 37% was recorded in CO3-50- 43 variety with a tuber yield of 16.60 t ha-1. These genotypes could be popularized among farmers as a source of Vitamin A rich food and to get higher tuber yield.

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