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首页> 外文期刊>Molecular Breeding >Association of lignin and FLEXIBLE CULM 1 (FC1) ortholog in imparting culm strength and lodging resistance in kodo millet (Paspalum scrobiculatum L.)
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Association of lignin and FLEXIBLE CULM 1 (FC1) ortholog in imparting culm strength and lodging resistance in kodo millet (Paspalum scrobiculatum L.)

机译：木质素和柔性糊剂1（FC1）直系同源物在赋予谷类小米（Paspalum scrobiculatum L.）茎秆强度和抗倒伏性方面的关联

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摘要

To understand the lodging behavior in kodo millet (Paspalum scrobiculatum L.) at morphological, biochemical, and molecular levels, 22 germplasm accessions selected based on previous trials were characterized for culm strength-related morphological traits such as pulling force, culm weight per unit length, culm diameter, recovery angle after bending and degree of lodging, and biochemical traits such as cellulose, hemicellulose, and lignin content of the culm. Correlation among traits and path analysis with degree of lodging showed that only lignin content per unit length of the culm had a very high negative effect on degree of lodging, followed by culm diameter, whichmeans that higher the lignin content and culm diameter, the lesser will be the degree of lodging. Hence, it was concluded that any improvement for lodging resistance in kodomillet can be achieved through improving the lignin content (mg/cm of the dry culm) and culm diameter. Gene expression studies in kodo millet for FLEXIBLE CULM 1 (FC1), a gene implicated in lignin biosynthetic pathway and lodging resistance in rice, suggests the role of FC1 gene ortholog in lignin accumulation in kodo millet as well. Accordingly, the highest gene expression was recorded in strong culm line "Adari" a land race and the lowest expression in "Aamo 10," a weak culm line.
机译：为了了解在形态，生化和分子水平上小米（Paspalum scrobiculatum L.）的倒伏行为，根据先前的试验选择了22种种质，对与茎强度有关的形态性状进行了表征，例如拉力，每单位长度的茎重，茎秆直径，弯曲后的恢复角度和倒伏程度，以及茎秆的纤维素，半纤维素和木质素含量等生化特性。性状与通径分析之间的相关性与倒伏度的关系表明，只有茎长度的木质素含量对倒伏度有极高的负面影响，其次是茎秆直径，这意味着木质素含量和茎秆直径越高，木质素含量越低。是住宿的程度。因此，得出的结论是，通过改善木质素含量（干茎的mg / cm）和茎直径，可以使kodomillet的抗倒伏性得到任何改善。柔韧性库姆1（FC1）是一种与木质素的生物合成途径和水稻抗倒伏性相关的基因，在科多谷子中的基因表达研究表明，FC1基因直向同源物在科多谷子中的木质素积累中也起着作用。因此，在强茎秆种系“ Adari”陆地种族中记录了最高的基因表达，而在弱茎秆系“ Aamo 10”中记录了最低的基因表达。

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