Papers by Sreekumar Janardanan
Omics in Horticultural Crops
International Journal of Applied and Pure Science and Agriculture, 2017
Sweet potato (Ipomoea batatas (L.) Lam) is the seventh most important food crop in the world. In ... more 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.
The family Araceae includes the important edible aroids like Amorphophallus peaoniifolius var. ca... more The family Araceae includes the important edible aroids like Amorphophallus peaoniifolius var. campanulatus (elephant foot yam), Colocasia esculenta (taro), Xanthosoma sagittifolium (tannia) etc. Most of these root crops are important source of food in many tropical countries, primarily grown for their corms and cormels, although sometimes the leaves are also used as vegetable. The Araceae family is highly heterogeneous, with enormous variation in morphology, chromosome structure and number. The Central Tuber Crops Research Institute, Thiruvananthapuram, India, is maintaining about 590 taro and 183 elephant foot yam accessions, which represent genotypes collected from different parts of India and forms the backbone of the variability existing within the country. However, there is chance of duplicates being present in the above collection. Hence morphological characterization is resorted to identify the duplicates. National Bureau of Plant Genetic Resources (NBPGR) descriptors were u...
International Journal of Applied and Pure Science and Agriculture, 2017
Sweet potato (Ipomoea batatas (L.) Lam) is the seventh most important food crop in the world. In ... more 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 r...
International Journal of Applied and Pure Science and Agriculture, 2017
Sweet potato (Ipomoea batatas (L.) Lam) is the seventh most important food crop in the world. In ... more 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 r...
Organic Farming - A Promising Way of Food Production, 2016
Alternative soil management practices like organic farming assume significance in the context of ... more Alternative soil management practices like organic farming assume significance in the context of climate change for safe food production. Yams (white yam, greater yam and lesser yam) and edible aroids (elephant foot yam (EFY), taro and tannia) are tuberous vegetables with good taste and nutritive value. Six field experiments were conducted at the ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, India, over a decade (2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015) to compare the varietal response, yield, quality and soil properties under organic vs conventional system and develop a learning system. The elite and local varieties of EFY and taro and the three species of yams, including trailing and dwarf genotypes, responded equally well to both the systems. Organic management enhanced the yield by 10-20% and the net profit by 20-40% over chemical farming. The tuber quality was improved with higher dry matter, starch, crude protein, K, Ca and Mg contents. The anti-nutritional factor in EFY, oxalate content, was lowered by 21%. Physico-chemical and biological properties of soil were favoured and the organic system scored a significantly higher soil quality index. The cost-effective technologies were field validated. A learning system developed using artificial neural networks predicted the performance of EFY organic production system.
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Papers by Sreekumar Janardanan