文献类型： 外文期刊

作者： Iqbal, Zubair ¹ ; Hu, Daowu ¹ ; Nazeer, Wajad ² ; Ge, Hao ¹ ; Nazir, Talha ³ ; Fiaz, Sajid ⁴ ; Gul, Alia ⁵ ; Iqbal, Muhammad Shahid ¹ ; El-Sabrout, Ahmed M. ⁶ ; Maryum, Zahra ⁷ ; Pan, Zhaoe ¹ ; Du, Xiongming ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biol, Anyang 455000, Peoples R China

2.Ghazi Univ, Fac Agr Sci, Dept Plant Breeding & Genet, Dera Ghazi Khan 32200, Punjab, Pakistan

3.Ghazi Univ, Fac Agr Sci, Dept Plant Protect, Dera Ghazi Khan 32200, Punjab, Pakistan

4.Univ Haripur, Dept Plant Breeding & Genet, Haripur 22620, Khyber Pakhtunk, Pakistan

5.Hazara Univ, Dept Bot, Mansehra 21120, Khyber Pakhtunk, Pakistan

6.Alexandria Univ, Fac Agr El Shatby, Dept Appl Entomol & Zool, Alexandria 21545, Egypt

7.Nucl Inst Agr & Biol NIAB, Plant Breeding & Genet Div, Cotton Lab, Faisalabad 38000, Punjab, Pakistan

关键词： Gossypium hirsutum; Gossypium arboreum; intraspecific hybridization; genetic resource; yield improvement

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

ISSN：

年卷期： 2022 年 12 卷 2 期

页码：

收录情况： SCI

摘要： Cotton is an important agro-industrial crop across the globe. Improving the fiber quality and yield potential of cotton are major commercial targets for cotton breeders. The cotton lint yield is computed by multiplying three fundamental yield constituents: average boll weight, boll number per unit ground area, and lint percentage. The cotton species Gossypium arboreum exhibits a wide range of desirable traits, which are absent in the congener Gossypium hirsutum. Four parental lines of G. hirsutum and G. arboreum, with significant differences in boll-related traits, were used to develop the following four F-2 populations: Mei Zhongmian x Chimu Heizi (MC), Mei Zhongmian x L-02292-3 (ML), Dixie king x Suyuan 04-44 (DS), and Dixie king x Pamuk (DP), in order to study complex traits, such as boll weight (BW) (g), lint percentage (LP) (%), boll upper width (BUW), boll medium width (BMW), boll lower width (BLU), and boll length (BL) (mm). In segregation populations, extensive phenotypic differences and transgressive segregation were observed. The results show that most of the correlation clusters were negatively associated with boll weight and lint percentage. The positive correlation clusters were observed among boll upper width (BUW), boll medium width (BMW), boll lower width (BLW), and boll length (BL). Seven of the twenty-four extracted principal components had eigenvalues > 1. This accounted for 62.2% of the difference between the four F-2 populations. Principal component 1 accounted for 15.1% of the overall variability. The variation in principal component 1 was mainly attributed to boll lower width (BLW), boll medium width (BMW), boll upper width (BUW), boll length (BL), and boll weight (BW) of the ML population. The heritability estimates varied between high, medium, and low for various traits among the studied F-2 populations. Interestingly, all traits demonstrated low genetic advance, which indicates that non-additive genes controlled these characters and that direct selection for these traits is not beneficial. The outcome of the present investigation will help to develop cotton cultivars with improved boll weight and lint percentage.