An understanding of the physiological limitations to yield in dry environments, together with molecular genetics, offers important opportunities to hasten yield progress. This approach is particularly important to more accurately target factors limiting yield, to speed up selection, and to broaden the genetic base. In this paper we list morphological and physiological traits we consider important to increasing the yield of temperate cereals grown in dry environments. We also provide an assessment of the heritability of the traits, the ease of selection, whether g x e is important, and whether molecular markers have been identified in wheat. We then provide a rating to indicate the importance of molecular markers to select for each trait. A brief description is also given of our research and our breeding efforts to improve the performance of wheat under drought by increasing transpiration efficiency, crop establishment using alternative dwarfing genes, increased early vigor, and a higher harvest index. Molecular opportunities are emphasized in this description.
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机译：了解干燥环境中产量的生理局限性，以及分子遗传学，为加速产量进展提供重要机会。这种方法对于更准确的目标因素限制产量尤为重要，以加速选择，并扩大遗传群。本文列出了形态学和生理特性，我们认为对在干燥环境中增长的温带谷物产量增加的重要性。我们还提供了对特征的可遗传性的评估，易于选择，是否G X E是重要的，以及是否已在小麦中鉴定分子标记。然后，我们提供评级以表明分子标记为每个特征选择的重要性。还提出了简要的描述，其中还提出了我们的研究和我们的繁殖努力，通过提高蒸腾效率，使用替代矮化基因的作物建立，增加早期活力以及更高的收获指数，提高小麦的繁殖努力。在本说明书中强调了分子机会。
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