Abstract
The crop yield of lentil is below attainable levels which are mainly attributed to pathological factors especially lentil wilt caused by Fusarium oxysporum f.sp. lentis and Stemphylium blight caused by Stemphylium botryosum .Fusarium wilt is a potential threat to letil production not only in Nepal but worldwide that can cause complete crop failure. While stemphylium blight is recently being serious problem to Bangladesh, Nepal and India. In Nepal, multiple disease resistance work was not reported in lentil before the present study. Two trials separately using 185 genotypes were conducted to study the wilt and stem phylium blight were conducted. For wilt screening one hundred eighty five lentil lines including resistant check ILL7164 and susceptible check sindur, were sown in a previously developed wilt sick bed, while for stem phylium blight serarate trial was conducted in the research area of Regional Agricultural Research Station Nepalgunj using augmented design. Natural inoculums were also relied upon. Disease severity data were recorded. Results revealed that incase of Fusarium wilt sixteen genotypes were found resistant and twenty-three moderately resistant while in case of Stemphylium blight 87 resistant and 36 moderately resistant in field condition. It also indicated that 9 genotypes i.e RL-13,RL-21,ILL6468,ILL9996,\ILL6024,ILL6811,ILL7164,Arun,Maheswar bharti showed combined resistant to both the diseases.Int. J. Appl. Sci. Biotechnol. Vol 5(1): 102-107
Highlights
Lentil (Lens culinaris fsp. culinaris Medikus) is affordable source of dietary proteins (22–35%), minerals, fiber, and carbohydrates to poor people and plays a vital role in alleviating malnutrition and micronutrient deficiencies in developing countries
Its production seems adequate but current status of lentil is prone to a number of pathological threats including lentil wilt, stemphilium blight, collar rot and root rot in Nepal (Yadav, 2004) Among these diseases, lentil wilt caused by Fusarium oxysporum f.sp. lentis (Fol) is believed to be the most important constraint in lentil production worldwide (Taylor et al, 2007)
This study was conducted under natural infection conditions in the field of RARS, Nepalgunj during 2012/13 lentil growing season, The climatic conditions during the experiment were favorable for the development of wilt and Stemphylium blight
Summary
Lentil (Lens culinaris fsp. culinaris Medikus) is affordable source of dietary proteins (22–35%), minerals, fiber, and carbohydrates to poor people and plays a vital role in alleviating malnutrition and micronutrient deficiencies in developing countries. Culinaris Medikus) is affordable source of dietary proteins (22–35%), minerals, fiber, and carbohydrates to poor people and plays a vital role in alleviating malnutrition and micronutrient deficiencies in developing countries It is highly recommended by physicians for the people suffering from diabetes, obesity, and cardiovascular diseases (Srivastava and Vasishtha, 2012). Vegetable protein is gaining preference over the animal protein for consumption by the health conscious people in the present day This could be one of the reasons for increased per capita consumption (Vandenberg, 2009) and fivefold increase in global lentil production (from 0.85 to 4.43 Mt) during the last five decades, through a 155% increase in cultivated area and the doubling of average yields from 528 to 1068 kg ha-1 (FAOSTAT, 2014). Its production seems adequate but current status of lentil is prone to a number of pathological threats including lentil wilt, stemphilium blight, collar rot and root rot in Nepal (Yadav, 2004) Among these diseases, lentil wilt caused by Fusarium oxysporum f.sp. lentis (Fol) is believed to be the most important constraint in lentil production worldwide (Taylor et al, 2007)
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