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首页> 外文期刊>African Journal of Biotechnology >Effects of early water stress levels on berry set and berry development in Merlot cv. (Vitis vinifera L.)
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Effects of early water stress levels on berry set and berry development in Merlot cv. (Vitis vinifera L.)

机译：早期水分胁迫水平对梅洛葡萄的坐果和浆果发育的影响。 （Vitis vinifera L.）

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Early water deficit at flowering results in poor berry set or aborted grape yield reduction. The main aim of this?study?was to find out?the?effects of water stress levels on berry set and embryo berry development. This study?was carried out in Montpellier using by ECOTRON System, SupAgro/INRA, France. Seven years old Merlot / SO4?grafting combination was used as a plant material. Potted grapevines were grown under natural conditions in open field. A randomized block design was used with 3 replications and each parcel had 2 grapevines and 4 water stress levels. Stress Levels were WS0?(control) 0; -0.2 MPa, WS1?-0.2; -0.4 MPa, WS2?-0.4; -0.6 MPa, and WS3?-0.6; -0.8 MPa, respectively. The stress period was started in the second week of May in the 17th?E-L stage and ended in the second week of June in 27th?E-L stage. Flower samples from clusters were collected in three days intervals and samples were examined by Technovit method. Under this early water stress conditions, the pollen viability and pollen germination ratios were not affected, but berry set ratio, phenologic stages and berry development were negatively affected. It was determined?in Merlot cv. early water stress (between 19th?to 29th?stages) should be avoided especially when Ψpd?values decrease below -0.4MPa.
机译：开花时的早期水分缺乏会导致浆果结实不良或葡萄产量下降。该研究的主要目的是找出水分胁迫水平对浆果坐果和胚浆果发育的影响。这项研究是由法国SupAgro / INRA的ECOTRON系统在蒙彼利埃进行的。七岁的Merlot / SO4嫁接组合用作植物材料。盆栽的葡萄树是在自然条件下于野外种植的。使用随机区组设计，重复3次，每个包裹有2个葡萄树和4个水分胁迫水平。压力水平为WS0？（对照）0; -0.2 MPa，WS1≤-0.2; -0.4 MPa，WS2≤-0.4; -0.6MPa，和WS3≤-0.6;分别为-0.8 MPa。压力期始于5月的第17周E-L阶段的第二周，结束于6月的第27周E-L阶段的第二周。每三天从簇中收集花样品，并通过Technovit方法检查样品。在这种早期的水分胁迫条件下，花粉活力和花粉发芽率没有受到影响，但是浆果结实率，物候阶段和浆果发育受到了负面影响。它是在Merlot简历中确定的。应避免早期的水分胁迫（在19到29阶段之间），特别是当Ψpd值降低到-0.4MPa以下时。

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