Nutritional evaluation of high protein genotypes of pearl millet (Pennisetum americanum (L.) leeke)

Abstract

Three high protein (HP) inbred lines (7001 12, WC-I 90 and B-816) of pearl millet were studied for their nutritional quality and the results compared with those of normal protein varieties. The protein content of H P lines showed an average increase of 60% but the starch and soluble sugars togerher and the far content decreased by 40 and 20%, respectively. Total dietary fibre of the H P lines was about 10% higher. A decrease (about 20%) in the albumin fraction was associated with an increase in prolamin in H P lines. The amino acid composition of the H P lines remained normal except for an approximately 16% decrease in lysine. However, the total amount of lysine in the sample increased by an average of 37%, as a result of a substantial increase in protein content. True protein digestibility was very high for each line but, expectedly, the biological value was markedly lower. The values for utilisable protein were highest for high protein genotypes. Digestible energy was high in all the genotypes, although slightly lower values were obtained for the H P lines; this was attributed to the fibre fractions.

Valor nutritivo e desempenho de coelhos alimentados com rações contendo milheto (Pennisetum glaucum (L.) R.Br)

“…Estes teores são bastantes variados, de acordo com o cultivar, solo, entre outros fatores. Singh et al (1987), trabalhando com diferentes cultivares, encontraram valores protéicos variando entre 9,9 e 20,8% e teores de EE entre 4,1 e 5,4%. Os teores de PB dos cultivares BN2 e Iapar foram numericamente inferiores e semelhantes.…”

“…Entretanto, verifica-se que em função do grande número de cultivares de milheto existentes, ocorre variação acentuada nos teores de nutrientes, principalmente de PB (Singh et al, 1987) e, conseqüente-mente, do valor energético.…”

Effects of Salt Stress on Plant Growth, Nutrient Partitioning, Chlorophyll Content, Leaf Relative Water Content, Accumulation of Osmolytes and Antioxidant Compounds in Pepper (Capsicum annuum L.) Cultivars

“…In plants, SP are involved in osmotic adjustment (Nouck et al, 2016). They are stored as nitrogen under salt-stress and re-used when the stress is removed (Singh et al, 1987). PRO content in plants increased significantly under salt stress in all cultivars compared to untreated plants (Fig.…”

“…In plants, SP are involved in osmotic adjustment. They are stored as nitrogen under salt-stress and re-used when the stress is removed (Singh et al, 1987). When different abiotic stresses affect plant functionality, alterations in photosynthesis and carbon partitioning are common features that take place at organ level as well as in whole plant (Gill et al, 2003).…”

Genetic enhancement of pearl millet and sorghum for the semi-arid tropics of Asia and Africa

“…No high-lysine mutants have been identified yet in pearl millet, though they must exist. One pearl millet study has shown that it should be possible to select for increased protein without sacrificing grain yield (Kumar et al 1983), while another has identified genotypes with high protein content ranging from 14 to 19% (Singh et al 1987). At higher protein levels, the percentage of lysine in protein decreases, but in the grain sample it still increases.…”