Meena Vijay Kamal, Taak Yashpal, Chaudhary Rajat, Chand Subhash, Patel Manoj Kumar, Muthusamy Vignesh, Yadav Sangita, Saini Navinder, Vasudev Sujata, Yadava Devendra Kumar
Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India.
Division of Seed Science and Technology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India.
Plants (Basel). 2022 Jul 5;11(13):1779. doi: 10.3390/plants11131779.
Tocopherol is vital for the nutritional value and stability of Indian mustard ( L. Czern and Coss) oil; nonetheless, the lack of information on genetic control is hampering its improvement. In this study, six populations (P, P, F, F, BCP, and BCP) of RLC3 × NPJ203 were evaluated in a family block design to evaluate the inheritance pattern, gene effects, and various other genetic parameters of tocopherol content (α, γ, and total), using generation mean analysis. The comparison of direct and reciprocal crosses indicated that the tocopherol content was not influenced by maternal inheritance. Negative directional heterosis showed that ATC, GTC, and TTC are governed by recessive genes. Potence ratio and degree of dominance highlighted an over-dominance type of gene interaction for GTC and TTC, whereas ATC was governed by epistatic interactions. Furthermore, the six-parameter model revealed a duplicate gene action for α-tocopherol content. Broad and narrow sense heritability coupled with genetic advances were high.
生育酚对印度芥菜（L. Czern and Coss）油的营养价值和稳定性至关重要；然而，缺乏关于遗传控制的信息阻碍了其品质改良。在本研究中，采用世代均值分析，以家系区组设计对RLC3×NPJ203的六个群体（P、P、F、F、BCP和BCP）进行评估，以研究生育酚含量（α、γ和总量）的遗传模式、基因效应及其他各种遗传参数。正反交比较表明，生育酚含量不受母体遗传影响。负向定向杂种优势表明，总生育酚含量（ATC）、γ-生育酚含量（GTC）和生育酚总量（TTC）受隐性基因控制。显性势比和显性度表明，GTC和TTC存在超显性类型的基因互作，而ATC受上位性互作控制。此外，六参数模型显示α-生育酚含量存在重复基因作用。广义和狭义遗传力以及遗传进展均较高。
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