Sorghum is an important staple food crop of Asian and African countries.As a poor man s crop",it provides dietary starch,protein,and some vitamins and minerals.Minerals are important for various physiological fun...Sorghum is an important staple food crop of Asian and African countries.As a poor man s crop",it provides dietary starch,protein,and some vitamins and minerals.Minerals are important for various physiological functions in the human body.As a major staple crop of central and southern Indian provinces,sorghum landraces are a source of supplementary micronutrients.Concentrations of micronutrients and protein and yield parameters were studied using 112 local landraces and varieties.Univariate analysis revealed wide variation for iron(1.10-9.54 mg 100 g^(-1)),zinc(1.12-7.58 mg 100 g^(-1)),protein(3.50-12.60%),and grain yield(2.50-76.50 g) among the landraces.High estimates of genetic/phenotypic coefficient of variation,and genetic advances over the mean were identified for landraces and varieties.High heritabilities were also identified for yield and mineral content.Correlation estimates among the genotypes indicated that grain yield was positively correlated with copper and protein with copper and zinc.Cluster analysis based on Euclidean distance resolved all of the genotypes into three major clusters.The wide range of values with high heritability estimates may favor the use of these landraces in recombination breeding to improve nutritional quality in sorghum.展开更多
An experiment was conducted in three fallow paddy fields situated on the mid-tropical plain zone of a northeastern Indian state （Tripura） to provide rice fallow management options using leftover soil moisture and nu...An experiment was conducted in three fallow paddy fields situated on the mid-tropical plain zone of a northeastern Indian state （Tripura） to provide rice fallow management options using leftover soil moisture and nutrients. The three experimental fields were managed by growing rice under the system of rice intensification as the rainy season crop and then groundnut, lentil, rapeseed and potato as the post-rainy season crops. Fertilization under the integrated nutrient management system and lifesaving irrigation at critical stages of each post-rainy season crop were provided. Results showed that the field water use efficiency values were 5.93, 2.39, 2.37 and 59.76 kg/（hm2.mm） and that the yield of these crops increased by approximately 20%, 34%, 40% and 20% after applying two lifesaving irrigations in groundnut, lentil, rapeseed and potato, respectively. Therefore, fallow paddy field can provide possible profitable crops during the post-rainy season by utilizing the residual moisture and minimum supplemental irrigation under improved nutrient management practices.展开更多
文摘Sorghum is an important staple food crop of Asian and African countries.As a poor man s crop",it provides dietary starch,protein,and some vitamins and minerals.Minerals are important for various physiological functions in the human body.As a major staple crop of central and southern Indian provinces,sorghum landraces are a source of supplementary micronutrients.Concentrations of micronutrients and protein and yield parameters were studied using 112 local landraces and varieties.Univariate analysis revealed wide variation for iron(1.10-9.54 mg 100 g^(-1)),zinc(1.12-7.58 mg 100 g^(-1)),protein(3.50-12.60%),and grain yield(2.50-76.50 g) among the landraces.High estimates of genetic/phenotypic coefficient of variation,and genetic advances over the mean were identified for landraces and varieties.High heritabilities were also identified for yield and mineral content.Correlation estimates among the genotypes indicated that grain yield was positively correlated with copper and protein with copper and zinc.Cluster analysis based on Euclidean distance resolved all of the genotypes into three major clusters.The wide range of values with high heritability estimates may favor the use of these landraces in recombination breeding to improve nutritional quality in sorghum.
文摘An experiment was conducted in three fallow paddy fields situated on the mid-tropical plain zone of a northeastern Indian state （Tripura） to provide rice fallow management options using leftover soil moisture and nutrients. The three experimental fields were managed by growing rice under the system of rice intensification as the rainy season crop and then groundnut, lentil, rapeseed and potato as the post-rainy season crops. Fertilization under the integrated nutrient management system and lifesaving irrigation at critical stages of each post-rainy season crop were provided. Results showed that the field water use efficiency values were 5.93, 2.39, 2.37 and 59.76 kg/（hm2.mm） and that the yield of these crops increased by approximately 20%, 34%, 40% and 20% after applying two lifesaving irrigations in groundnut, lentil, rapeseed and potato, respectively. Therefore, fallow paddy field can provide possible profitable crops during the post-rainy season by utilizing the residual moisture and minimum supplemental irrigation under improved nutrient management practices.
