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首页> 外文期刊>Journal of Crop Improvement >Transpiration response to vapor pressure deficit and soil drying among quinoa genotypes {Chenopodium quinoa Willd.)
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Transpiration response to vapor pressure deficit and soil drying among quinoa genotypes {Chenopodium quinoa Willd.)

机译：藜氨基基因型蒸气压缺陷和土壤干燥的蒸气压力响应{藜喹啉危险。）

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摘要

Water-deficit conditions limit increasing crop yield around the world. In order to improve crop yield it has been proposed to decrease water use early in the season so more water will be available later in the season to support seed growth during reproductive development. To achieve this, there are two water-conservation traits of special interest: partial stomatal closure under high vapor pressure deficit (VPD) and early in the soil drying cycle. Quinoa {Chenopodium quinoa Willd.) is well known forits ability to grow in poor soils and extreme climatic environments. Therefore, quinoa may especially benefit from expression of water-conservation for water-limited conditions. These traits have not been previously studied in quinoa. This study reportedthe response of eight quinoa genotypes. Genotypes Red head, CICA-17, Salcedo, Ollague, Good Afternoon, and Pasankalla expressed a VPD breakpoint (BP) but Titicaca and French Vanilla not. All genotypes expressed a FTSW threshold with soil drying as expected. French Vanilla had the highest threshold, so it would be a candidate as a water-conserving genotype. The results of this study can be applied directly in field tests comparing cultivars under water-deficit conditions, and selection of genotypes to be used in breeding for improved cultivars specifically for drought.
机译：缺水状况限制了全球作物产量的增长。为了提高作物产量，有人建议在季初减少用水，以便在季末提供更多的水，以支持繁殖发育期间的种子生长。为了实现这一点，有两个特别有趣的保水特性：高蒸气压亏缺（VPD）下的部分气孔关闭和土壤干燥循环早期。藜麦藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属藜属n、 Pasankalla表达了VPD断点（BP），但Titicaca和法国香草没有表达。所有基因型在土壤干燥时都表现出FTSW阈值。法国香草具有最高的阈值，因此它将是一个候选的保水基因型。这项研究的结果可以直接应用于田间试验，比较缺水条件下的品种，以及选择基因型，用于培育抗旱改良品种。

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