کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6375000 1624691 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Differential responses of rice genotypes and physiological mechanism under prolonged deepwater flooding
ترجمه فارسی عنوان
پاسخ های دیفرانسیل ژنوتیپ های برنج و مکانیزم فیزیولوژیکی در طول سیلاب عمیق آب در طول عمر
کلمات کلیدی
برنج، سیلاب، سیل طولانی مدت، مکانیسم تحمل،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Submerge tolerant genotypes and genotypes representing wide range of ecosystems were compared in normal and prolonged flooding situation during 2011 and 2012. Discriminant function analysis discriminated tolerant from intolerant genotypes by shoot length, grain yield per plant, number of tillers, EBT and number of nodes per stem. Cultivar-by-biplot analysis revealed that grain yield strongly correlated with filled grains per panicle, number of EBT, number of nodes, spikelet fertility percent or basal culm girth under prolonged flooding. Further, based on biplot analysis, two rice genotypes - Puzhuthiikar and IR 72593 were selected for pot experiment to study their physiological mechanisms of escape from prolonged flooding by evaluating photosynthesis, transpiration, inter cellular CO2 and morphometric traits. Under prolonged flooding, cv Puzhuthiikar exhibited significant increase in leaf blade length, sheath length and area and decrease in leaf blade area. Consequently, photosynthetic rate, transpiration and intercellular CO2 were increased. Therefore, breeders who involved in breeding rice cultivars for prolonged flooding situation should emphasize on parameters leaf blade length, sheath length and area to breed genotype suitable for prolonged flooding condition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Field Crops Research - Volume 172, 15 February 2015, Pages 153-163
نویسندگان
, , , , ,