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Evaluation of Inbred Maize (Zea mays L.) for Tolerance to Low Phosphorus at the Seedling Stage

文献类型： 外文期刊

作者： Uddin, Md. Shalim 1 ; Akter, Farzana 2 ; Azam, Md. Golam 3 ; Bagum, Shamim Ara 3 ; Hossain, Neelima 3 ; Billah, Masum 4 ; Biswas, Priya Lal 1 ; Hasibuzzaman, Abu Sayeed Md. 2 ; Khaldun, Abul Bashar Mohammad 6 ; Alsuhaibani, Amnah Mohammed 7 ; Gaber, Ahmed 8 ; Hossain, Akbar 9 ;

作者机构： 1.Chinese Acad Agr Sci GSCAAS, Inst Crop Sci, Grad Sch, Beijing 100081, Peoples R China

2.Bangabandhu Sheikh Mujibur Rahman Agr Univ, Dept Genet & Plant Breeding, Gazipur 1706, Bangladesh

3.Bangladesh Agr Res Inst, Gazipur 1701, Bangladesh

4.Chinese Acad Agr Sci, Inst Cotton Res, Anyang 455000, Peoples R China

5.Bangladesh Rice Res Inst BRRI, Gazipur 1701, Bangladesh

6.Bangladesh Agr Res Council BARC, Planning & Evaluat Div, Airport Rd, Dhaka 1215, Bangladesh

7.Princess Nourah Bint Abdulrahman Univ, Coll Educ, Dept Phys Sport Sci, POB 84428, Riyadh 84428, Saudi Arabia

8.Taif Univ, Coll Sci, Dept Biol, POB 11099, Taif 21944, Saudi Arabia

9.Bangladesh Wheat & Maize Res Inst, Div Soil Sci, Dinajpur 5200, Bangladesh

关键词： genetic variability; seedling traits; hydroponic; multi-trait selection; maize genotypes

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 13 期

页码：

收录情况： SCI

摘要： In underdeveloped nations where low-input agriculture is practiced, low phosphorus (LP) in the soil reduces the production of maize. In the present study, a total of 550 inbred maize lines were assessed for seedling traits under LP (2.5 x 10(-6) mol L-1 of KH2PO4) and NP (2.5 x 10(-4) mol L-1 of KH2PO4) hydroponic conditions. The purpose of this study was to quantify the amount of variation present in the measured traits, estimate the genetic involvement of these characteristics, examine the phenotypic correlation coefficients between traits, and to integrate this information to prepare a multi-trait selection index for LP tolerance in maize. A great deal of variability in the maize genotype panel was confirmed by descriptive statistics and analysis of variance (ANOVA). Estimated broad-sense heritability (h(2)) ranged from 0.7 to 0.91, indicating intermediate to high heritability values for the measured traits. A substantial connection between MSL and other root traits suggested that the direct selection of MSL (maximum shoot length) could be beneficial for the enhancement of other traits. The principal component analysis (PCA) of the first two main component axes explained approximately 81.27% of the variation between lines for the eight maize seedling variables. TDM (total dry matter), SDW (shoot dry weight), RDW (root dry weight), SFW (shoot fresh weight), RFW (root fresh weight), MRL (maximum root length), and MSL measurements accounted for the majority of the first principal component (59.35%). The multi-trait indices were calculated based on PCA using all the measured traits, and 30 genotypes were selected. These selected lines might be considered as the potential source for the improvement of LP tolerance in maize.

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