STUDIES ON NUTRITIONAL EVALUATION OF SEEDS OF NEWLY DEVELOPED COTTON (Gossypium hirsutum L.) CULTIVARS
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Date
2000-12-26
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MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI - 413 722
Abstract
The present investigations were undertaken to evaluate the nutritional quality of promising cottonseed cultivars in relation to : seed index, hull to kernel ratio, moisture, oil and oil quality, protein content,soluble protein, free amino acids, limiting amino acids, ash and important minerals. The seeds of eighteen cotton cultivars(Gossypium hirsutum L.)newly developed and identified are most promising were obtained from the Cotton Breeder, Cotton Improvement Project, Mahatma Phule KrishiVidyapeeth, Rahuri and evaluated for various quality parameters using standard analytical procedures. The seed index (g per 100 seeds) ranged from 5.60 to 8.82 g,the hull to kernel ratio varied from 0.65 to 1.64 and moisture content from7.4 to 16.10 per cent in the kernels. The crude oil content ranged from 30.20 to 37.70 per cent in different cultivars, the English red colour were found in most of the cultivars followed by carrot red and brownish orange colour. The iodineXVAbstract contd P. K. Lokhandevalue of ext racted oil varied from 95 to 106 and the acid value ranged from0.36 to 0.69 mg KOH/g oil. The defatted meal of different cultivars were found to contain 22.30 to 47.6 per cent crude protein, 2.69 to 13.80 per cent soluble proteinand 0.05 to 0.88 mg/100 g free amino acids. The content of limiting amino acids such as methionine and tryptophan varied from 1.12 to 2.73 g/16 g N (0.41 to 0.91 g/100 g meal) and 0.97 to 2.06 g/16 g N, (0.41 to 0.65 g/100 g meal), respectively. The protein content in seeds was found to be negatively correlated with the content of oil. The ash content of defatted kernel meals exhibited a wide variation of 6.6 to 9.8 per cent. The phosphorus content ranged from 1.32 to 2.03 per cent, potassium from 1.61 to 2.33 per cent, calcium from 109 to215 mg/100 g, magnesium from 80 to 177 mg/100 g and iron from 16 to 42mg/100 g. The manganese, zinc and copper content of defatted kernelmeal of cotton cultivars varied from 1.8 to 3.2 mg/100 g, 1.2 to 2.3 mg/100 g and 4.6 to 17 mg/100 g, respectively. Among eighteen cotton cultivars studied ERB, LRA-5166, BN,GB-20, RHC-0191 were higher in oil content, while DS-28, RHC-9740, LRA-5166, RHC-1189, G.Cot. 100 and SRT-1 were higher in protein content.Phosphorus content was higher in GB-20, RHC-0688, G.Cot.100, DS-28 andERB. Potassium was higher in the cultivars GB-20, JLH-168, BN, RHC-3194and LRA-5166. Calcium content was higher in the cultivars RHC-994, GB-20, RHC-0191, RHC-1088 and RHC-1794, while iron content was higher inthe cultivars ERB, G.Cot. 100, SRT-1, RHC-0688, LRA-5166 and RHC-3194.
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Keywords
sowing, intercropping, wheats, tillage equipment, seed drilling, crops, mustard, fertilizers, land resources, chickpeas