<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Evaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield"^^ . "Heat tolerance of groundnut (Arachis hypogaea L.) was evaluated under field conditions using physiological traits identified in a yield model [crop growth rate (C), reproductive duration (Dr) and partitioning (p)]. In 1991, 625 diverse genotypes were initially screened under irrigation during the hottest months (February to May). Subsequent tests consisted of 16 contrasting genotypes selected based on a combination of high pod yield and partitioning coefficient of >0· 50. Large variation was observed among the 625 genotypes for pod yield and physiological traits. C was a powerful factor influencing pod yield. Eight genotypes combining high pod yield and a partitioning coefficient greater than 0·6 were identified. These included two released cultivars (55–437 and 796) in the Sahel. Correlations between seasons were significant for p (r=0·84), but non-significant for pod yield (r=0·40), C (r=0·39), and Dr (0·36). Date of sowing and genotypes had significant effects on pod yield and C, but were slight on p and Dr. Pod yield of most genotypes declined by more than 50% when flowering and pod formation occurred when maximum temperatures averaged 40°C. The results revealed that estimates of p would be a more reliable selection criterion for identification of genotypes tolerant to heat than yield. Further research is suggested to maximize crop growth rate and partitioning of genotypes growing under supra-optimal temperatures.\r\n\r\n"^^ . "2001" . . "136" . "1" . . "Cambridge University Press"^^ . . . "Journal of Agricultural Science"^^ . . . "00218596" . . . . . . . . . . . . . "D"^^ . "Fatondji"^^ . "D Fatondji"^^ . . "B R"^^ . "Ntare"^^ . "B R Ntare"^^ . . "J H"^^ . "Williams"^^ . "J H Williams"^^ . . . . . . "Evaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield (PDF)"^^ . . . . . "Evaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . . "Evaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield (Image (PNG))"^^ . . . . . . "lightbox.jpg"^^ . . . "Evaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield (Image (PNG))"^^ . . . . . . "preview.jpg"^^ . . . "Evaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield (Image (PNG))"^^ . . . . . . "medium.jpg"^^ . . . "Evaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield (Image (PNG))"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #5065 \n\nEvaluation of groundnut genotypes for heat tolerance under field conditions in a Sahelian environment using a simple physiological model for yield\n\n" . "text/html" . . . "Groundnut"@en . .