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Screening of bread wheat ( Triticum aestivum L.) genotypes under drought stress conditions using multivariate analysis
Cereal Research Communications ( IF 1.6 ) Pub Date : 2020-04-23 , DOI: 10.1007/s42976-020-00039-8
M. Arifuzzaman , S. Barman , S. Hayder , M. A. K. Azad , M. T. S. Turin , M. A. Amzad , M. S. Masuda

Drought is a serious global problem of agriculture. For this, an investigation was carried out with 25 wheat genotypes composed of cultivars and advanced lines to screen drought-tolerant bread wheat genotypes using multivariate analysis. The experiment was conducted in a split plot design with three replications and two treatments control and drought. The analysis of variance revealed significant differences among the genotypes and treatments for all the characters studied, viz. plant height, flag leaf collar height, flag leaf length, flag leaf breadth, chlorophyll a, chlorophyll b, proline content, number of tillers per plant, root fresh weight, shoot fresh weight and root–shoot ratio. High heritability was observed for all the traits except flag leaf length, flag leaf breadth and number of tillers per plant. Based on the genetic distances, all the 25 genotypes were grouped into three different clusters. In control conditions, cluster number I contained most tolerant genotypes and under drought conditions, cluster number III contained most drought-tolerant genotypes. In biplot, the genotypes SATYN-24, BARI Gom-24 and SATYN-2 contributed positively and correlated with number of tillers per plant, shoot fresh weight, flag leaf breadth, proline content and plant height under drought conditions. The drought susceptibility index (DSI) indicated that the genotypes BARI Gom-24 and SATYN-9 exhibited a highly drought-tolerant genotype in the present investigation. These genotypes might carry genes for drought tolerance and may be useful for further drought tolerance breeding.

中文翻译:

利用多变量分析筛选干旱胁迫条件下的小麦面包基因型

干旱是一个严重的全球性农业问题。为此,对25个由栽培品种和高级品系组成的小麦基因型进行了调查,以使用多变量分析筛选耐旱面包小麦基因型。该实验是在分割地块设计中进行的,该设计具有三个重复和两个处理控制和干旱。方差分析显示,对于所有研究特征,基因型和处理之间存在显着差异。株高,旗叶高,旗叶长度,旗叶宽度,叶绿素a,叶绿素b,脯氨酸含量,单株分till数,根鲜重,苗鲜重和根茎比。除旗叶长度,旗叶宽度和每株分till数外,其他所有性状均具有较高的遗传力。根据遗传距离 所有这25个基因型被分为三个不同的簇。在对照条件下,第I类群包含大多数耐性基因型,在干旱条件下,第III类群包含大多数耐旱性基因型。在双作图上,基因型SATYN-24,BARI Gom-24和SATYN-2呈正相关,并且与干旱条件下单株的分number数,鲜重,旗叶宽度,脯氨酸含量和株高相关。干旱敏感性指数(DSI)表明,在本研究中,BARI Gom-24和SATYN-9基因型表现出高度耐旱的基因型。这些基因型可能携带抗旱基因,可能对进一步的抗旱育种有用。I类群包含大多数耐性基因型,在干旱条件下,III类群包含大多数耐旱性基因型。在双作图中,基因型SATYN-24,BARI Gom-24和SATYN-2呈正相关,并且与干旱条件下单株的分number数,鲜重,旗叶宽度,脯氨酸含量和株高相关。干旱敏感性指数(DSI)表明,在本研究中,BARI Gom-24和SATYN-9基因型表现出高度耐旱的基因型。这些基因型可能携带抗旱基因,可能对进一步的抗旱育种有用。第一个类群包含大多数耐性基因型,在干旱条件下,第三个类群包含大多数耐旱性基因型。在双作图上,基因型SATYN-24,BARI Gom-24和SATYN-2呈正相关,并且与干旱条件下单株的分number数,鲜重,旗叶宽度,脯氨酸含量和株高相关。干旱敏感性指数(DSI)表明,在本研究中,BARI Gom-24和SATYN-9基因型表现出高度耐旱的基因型。这些基因型可能携带抗旱基因,可能对进一步的抗旱育种有用。在干旱条件下,BARI Gom-24和SATYN-2与单株分ers数量,枝条鲜重,旗叶宽度,脯氨酸含量和株高呈正相关。干旱敏感性指数(DSI)表明,在本研究中,BARI Gom-24和SATYN-9基因型表现出高度耐旱的基因型。这些基因型可能携带抗旱基因,可能对进一步的抗旱育种有用。在干旱条件下,BARI Gom-24和SATYN-2与单株分ers数量,枝条鲜重,旗叶宽度,脯氨酸含量和株高呈正相关。干旱敏感性指数(DSI)表明,在本研究中,BARI Gom-24和SATYN-9基因型表现出高度耐旱的基因型。这些基因型可能携带抗旱基因,可能对进一步的抗旱育种有用。
更新日期:2020-04-23
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