Control of leaf expansion in sunflower (Helianthus annuusL.) by nitrogen nutrition
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چکیده
منابع مشابه
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15 صفحه اولMetabolic Regulation of Leaf Senescence in Sunflower (Helianthus annuus L.) Plants
The leaf is the main photosynthetic organ of plants and its development a complex process governed by a combination of environmental factors and intrinsic and genetically regulated signals (Van Lijsebettens & Clarke, 1998). Usually, leaf ontogeny includes an early phase of increasing photosynthetic rates while the leaf is actively expanding, a mature phase where such rates peak and a senescence...
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Improvement in leaf hydraulics is directly related to the improvement of plant tolerance to drought stress. Therefore, a field and pot experiment was carried out to determine the type of genetic variability and selection of parental types on the basis of combining ability for leaf hydraulics. Genotypes showed similar performance in both experiments; higher values were shown by drought tolerant ...
متن کاملIdentification of Candidate Genes Associated with Leaf Senescence in Cultivated Sunflower (Helianthus annuus L.)
Cultivated sunflower (Helianthus annuus L.), an important source of edible vegetable oil, shows rapid onset of senescence, which limits production by reducing photosynthetic capacity under specific growing conditions. Carbon for grain filling depends strongly on light interception by green leaf area, which diminishes during grain filling due to leaf senescence. Transcription factors (TFs) regul...
متن کاملAllelotoxicity of Parthenium leaf extracts on cytomorphological behaviour of sunflower (Helianthus annuus).
In recent decades allelopathy has gained much attention in the sustainable agricultural systems. It is necessary to trace out the mechanism of action of allelochemicals of plants on other plants. Allelochemicals of different plants interact differently with each other. In the present context an attempt has been made to study the influence of allelochemicals released by Parthenium on the growth,...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 1996
ISSN: 0022-0957,1460-2431
DOI: 10.1093/jxb/47.3.359