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Influence of Sowing Dates on Yield and Oil Quality in Sunflower
Author(s) -
Gupta Sarita,
Subrahmanyam Desiraju,
Rathore V. S.
Publication year - 1994
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1994.tb00539.x
Subject(s) - sowing , sunflower , helianthus annuus , oleic acid , agronomy , yield (engineering) , biology , linoleic acid , sunflower oil , horticulture , botany , fatty acid , food science , biochemistry , materials science , metallurgy
Effect of sowing dates (temperature regimes) on growth, yield oil content and quality in sunflower ( Helianthus annuus L. ) was studied. Plants of early sowings which had received low temperature during 0–45 days of growth grew very poorly in height. Plant height significantly correlated with temperature at all the three growth stages. Plants sown in March produced highest yield and January sown plants recorded lowest yield. Protein content of seeds decreased where as the oil content increased with delay in sowing dates. Oil content in the seeds collected from different sowing dates showed significant differences. However, oil content was not significantly correlated with temperatures at any growth stages. Incorporation of 14 C‐acetate into lipids of developing seeds was increased as the sowing was delayed. Early sown plants had higher percentage of oleic acid and late sown plants had higher percentage of linoleic acid. Effect sowing dates on oil content and oil quality were discussed on the basis of temperature variation during different growth stages.