بررسی تغییرات سیستمیک در معماری گیاه کنجد در شرایط محدودیت آبی

Water limitation is the common challenge in food production worldwide. Sesame, as a high quality-containing oil seed plant, has moderate to high tolerance to water stress. Knowing plant yield architecture under sub-optimal condition, e g. water stress, can increase the outputs of breeding for stress tolerance. In this repost, factor analysis followed by multiple regressions was applied on the data sets obtained on two different conditions, optimum irrigation and withwatering for sesame. Yield comparisons indicated significant effect of withwatering on the sesame plants, showing presence of a real stress treatment. The multivariate analysis showed that under stress condition, fewer traits were involved in the seed yield formation, and on the other hand, the involved traits usually were directly related to the seed characters, per se, and not to the total plant yield. Biologically speaking, upon stress occurrence, plant selects different strategies, but rather mostly toward surviving not economic production. In both watering treatments, capsule number per plant, flowering period, and number of fertile nodes appeared to have significant impact on the seed yield. As a result, it is expected that by applying the same breeding strategies, breeding for higher yield in sesame come to the goal.