نوع مقاله : مقاله پژوهشی
نویسنده
بخش تحقیقات زراعی و باغی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی سیستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، زابل، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
This experiment was conducted using a strip-split plot design based on randomized complete block design with three replications at the Zahak Research Station from 2019 to 2023. The treatments included three irrigation regimes: control, irrigation after 35% soil moisture deficiency, and irrigation after 70% soil moisture deficiency. These treatments were applied to horizontal plots, while the irrigation stages including from bud burst to flowering, from flowering to berry color variation, from berry color variation to harvest, and from harvest to leaf fall, were assigned to vertical plots. Deficit irrigation resulted in a decrease in traits such as relative leaf water content, leaf area, chlorophyll index, and fruit yield, while it increased traits like proline content, soluble sugars, relative membrane permeability, and canopy temperature. A multiple linear regression analysis was conducted for the Yaghouti grape cultivar yield. The key predictors influencing the fruit yield equation were relative leaf water content, proline, and relative membrane permeability of leaf cells. Fruit yield decreased by 7.1% and 4.1% during the stages from berry color variation to harvest, and from harvest to leaf fall, respectively, compared to control treatment. Overall, the results showed that fruit yield under irrigation regime of 35% soil moisture deficiency during the stages from berry color variation to harvest, and from harvest to leaf fall was comparable to the yield under full irrigation conditions.
کلیدواژهها [English]
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