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首页> 外文期刊>Acta Horticulturae >Evaluation of melons and indigenous Cucumis spp. genotypes for drought tolerance.
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Evaluation of melons and indigenous Cucumis spp. genotypes for drought tolerance.

机译：瓜和本地黄瓜属的评价。耐旱的基因型。

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摘要

Climate change affects the performance of many crop plants worldwide. Abiotic stress such as moisture stress is one of the important factors, reducing average yield of major vegetable crops by more than 50%. The present study was planned to find out simple and precise field techniques to detect moisture stress tolerant genotypes of melons and Cucumis spp. A total of 121 genotypes of melons and Cucumis spp. including 43 lines of Cucumis callosus, 19 lines of Cucumis melo, 29 lines of Cucumis sativus, 27 lines of Cucumis melo var. momordica, 2 lines of Cucumis melo var. utilissimus and 1 line of Cucumis melo var. chate, were planted in two sets during the summer season of 2010, at IIVR, Varanasi, in a randomised block design with two replications. Both sets were kept under regular irrigation and normal agricultural practices were applied during the initial 30 days. After 30 days, irrigation in one set was withdrawn. Irrigation, however, continued with the other set as per requirement and observations were recorded. The treatment set which was exposed to moisture stress, was re-irrigated after one month of stress exposure. During the period of water withdrawal accessions were evaluated using a five point scale (1-5) and seven horticultural parameters, which included fruit count/plant, fruit weight, yield/plant (g), yield/ha (q), fruit length (cm), fruit width (cm) and vine length (cm) in both sets of experiment. The drought tolerance efficiency (DTE) was calculated using both sets of data. Based on the observations above, 5 genotypes, which include 2 lines Cucumis callosus (SKY/DR/RS-101 and AHK-200), 1 line each of Cucumis melo (SC-15), Cucumis melo var. momordica (VRSM-58) and Cucumis melo var. chate (arya), were identified as drought tolerance genotypes based on DTE % and yield parameters. These lines of melons and Cucumis spp. should be included in long term breeding programs because they have high moisture stress tolerance efficiency.
机译：气候变化影响着全世界许多农作物的生长。水分胁迫等非生物胁迫是重要因素之一，主要蔬菜作物的平均单产降低了50％以上。本研究计划寻找简单和精确的田间技术，以检测瓜和黄瓜属植物的耐湿胁迫基因型。瓜和黄瓜属的共121种基因型。其中包括黄瓜43行，黄瓜19行，黄瓜29行，黄瓜27行。苦瓜，黄瓜2倍变种。 utilissimus和1行黄瓜（Cucumis melo var）。 chate，于2010年夏季在瓦拉纳西的IIVR种植了两套，采用随机区组设计，重复了两次。两组均在常规灌溉条件下进行，并在最初的30天内采用了正常的农业作法。 30天后，取消一组灌溉。然而，根据要求，继续使用另一组进行灌溉，并记录观察结果。暴露于水分胁迫下的处理组在胁迫暴露一个月后重新灌溉。在取水期间，使用五点量表（1-5）和七个园艺参数对种质进行了评估，其中包括果实数/植物，果实重量，产量/植物（g），产量/公顷（q），果实长度两组实验中的果树长（厘米），果实宽度（厘米）和葡萄树长度（厘米）。使用这两组数据计算了抗旱性（DTE）。基于上述观察，共有5个基因型，包括2个黄瓜系愈伤组织（SKY / DR / RS-101和AHK-200），黄瓜1个系（SC-15）和黄瓜1个系。苦瓜（VRSM-58）和黄瓜甜瓜变种。基于DTE％和产量参数，将chate（arya）鉴定为耐旱基因型。这些瓜和黄瓜属的系。应将其纳入长期育种计划，因为它们具有很高的耐潮性。

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