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首页> 外文期刊>Australian Journal of Crop Science >Genetic diversity of water use efficiency in Jerusalem artichoke (Helianthus tuberosus L.) germplasm
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Genetic diversity of water use efficiency in Jerusalem artichoke (Helianthus tuberosus L.) germplasm

机译：菊芋种质资源水分利用效率的遗传多样性

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Genetic diversity in crop germplasm is an important resource for crop improvement, but information on genetic diversity is rare for Jerusalem artichoke, especially for traits related to water use efficiency. The objectives of this study were to investigate genetic variations for water use and water use efficiency in Jerusalem artichoke accessions and to identify superior genotypes for these characters under different water regimes. Forty Jerusalem artichoke accessions were arranged in a strip plot design with four replications for two years. Three strip plots represented three water regimes (W1 = 100%, W2 = 75% and W3 = 45% of crop water requirement). Data were recorded for tuber dry weight, biomass, relative water content, water use and water use efficiency. The effects of water regimes and Jerusalem artichoke accessions were significant for all characters. Genotypes contributed the largest portions for water use efficiency for biomass and tubers. These results documented genetic diversity for water use efficiency in Jerusalem artichoke. The genotypes with high water use efficiency for biomass were HEL 231, HEL 65 and JA102×JA89(8). HEL 65 had high water use efficiency for tubers. These genotypes should be useful in future breeding programs for higher water use efficiency.
机译：作物种质的遗传多样性是改良作物的重要资源，但是菊芋，尤其是与水分利用效率相关的性状，遗传多样性的信息很少。这项研究的目的是调查菊芋种质的水分利用和水分利用效率的遗传变异，并确定在不同水分制度下这些性状的优良基因型。 40年菊芋种质按地带设计布置，两年重复四次。三个带状图代表三种水情（W1 = 100％，W2 = 75％，W3 = 45％的作物需水量）。记录有关块茎干重，生物量，相对含水量，用水量和用水效率的数据。水政和耶路撒冷洋蓟加入对所有字符的影响都很大。基因型对生物质和块茎的水分利用效率贡献最大。这些结果证明了菊芋在水利用效率方面的遗传多样性。生物质水分利用效率高的基因型为HEL 231，HEL 65和JA102×JA89（8）。 HEL 65对块茎的用水效率很高。这些基因型应在未来的育种计划中有用，以提高用水效率。

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