Genotypic Variation in Cotton Genotypes for Low Phosphorus Tolerance and Efficiency Under Different Growth Conditions
文献类型: 外文期刊
作者: Iqbal, Asif;Qiang, Dong;Xiangru, Wang;Huiping, Gui;Hengheng, Zhang;Xiling, Zhang;Meizhen, Song
作者机构:
关键词: Cotton;Phosphorus;Classification of genotypes;Cotton breeding
期刊名称: GESUNDE PFLANZEN
ISSN: 0367-4223
年卷期: 2023 年
页码:
收录情况: SCIE(2023版)
摘要: Low phosphorus (P) availability is a major problem for cotton production. Identification of low P tolerant and efficient genotypes would best address these problems. In this regard, thirty cotton genotypes were categorized for dry matter production and P use efficiency (PUE) under low and normal P conditions. The results showed that cotton genotypes displayed considerable variations in root morphology, dry matter production, photosynthesis, PUE, and antioxidant system in response to low and normal P conditions. Genotypes Jimian169, Zhongzhimian2, and Lumianyan16 produced more dry matter have high PUE and were considered strong low P tolerant and efficient, whereas genotypes DES926, TM-1, and CCRI10 have low dry matter and PUE and were proved to be weak low P tolerant and inefficient. Based on various classification methods, genotypes Jimian169 and DES926 were considered strong and weak low P tolerant cotton genotypes, respectively. For most of the traits, the heritability was high, suggesting that selection under low P is more reliable than under the normal P condition. The use of the identified cotton genotypes and traits could improve cotton breeding activities and help to improve sustainable cotton production.
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