High Temperature Effects on Seedling Emergence and Embryo Protein Synthesis of Sorghum
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High soil temperatures (>45°C) inhibit the field emergence of sorghum [ Sorghum bicolor (L.) Moench] in the semiarid tropics. The objective of this study is to demonstrate that the measurement of embryo protein synthesis (EPS) is convenient an d rapid technique for the assessment of sorghum emergence at high soil temperatures. Two experiments were conducted, one using four landrace accessions and another using 14 commercially available lines. Seedling emergence was measured in a large water bath containing a series of soil‐filled clay pots. The temperature of the soil in the pots could be regulated (35–50°C) using infrared lamps. Protein synthesis was measured by incubating embryo‐containing half‐seeds with 14 C‐labeled amino acids at different temperatures (35–40°C); the resulting labeled proteins were extracted for counting. The relative rankings of the landraces with respect to EPS and emergence demonstrated that the EPS technique clearly distinguished between lines that were able or unable to emerge at 50°C. However, with the commercially available lines, despite the agreement between the ranking of EPS and emergence, two lines diverged from this relationship, which is attributed to the greater complexity of the overall emergence process.Keywords:
Sorghum bicolor
Sorghum bicolor
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Sorghum bicolor
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Sorghum bicolor
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Among major agricultural crops, none varies as widely as sorghum. Within this species, a number of varieties exist which produce and juicy stalks. The name sweet sorghum is used to identify these varietis of sorghum, Sorghum bicolor(L.) Moench. These sweet-stalk varietis are also referred to as sugar sorghums or sorgo...
Sorghum bicolor
Sweet sorghum
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A postharvest handling farm survey was conducted on sorghum ( Sorghum bicolor L. Moench) grains as an alternative staple crop adapted in arid and semi-arid lands. The objective of the study was to determine postharvest handling of sorghum grains. Eighty eight farmers were sampled using snowball sampling method in six sorghum growing sub-counties (Siaya, Bondo, Njoro, Rongai, Kibwezi and Kathonzweni). Data collected was on varieties, drying method, storage form and proportion lost due to mould was analyzed using SPSS version 20 software descriptive statistic cross tabulation. The results showed that farmers preferred local varieties than the improved sorghum varieties. Sorghum grains were either stored in shelled form or on panicles. Mould occurrence in the field and storage in the sub-counties as hazard handling of the grains. This study further established that farmers maintain a diversity of sorghum to reduce on the proportion lost either as storage duration of grains and biotic stress resistance. The results of the study can be used to explain erratic food insecurity in these sub-counties with potential of sorghum production.
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Study of Genetic Agchitedcture for Grain yield and its components in Sorghum (Sorghum Bicolor (L.) Moench.)
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Sorghum bicolor
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Sorghum bicolor
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