Genetic and Quantitative Trait Locus Analysis of Cell Wall Components and Forage Digestibility in the Zheng58 × HD568 Maize RIL Population at Anthesis Stage
| Autor: | Qi Wang, Hongwu Wang, Zhifang Liu, Yujin Wu, Feiqian Ma, Changling Huang, Xiaojiao Hu, Kun Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine QTL Population lignin Plant Science lcsh:Plant culture Biology Quantitative trait locus maize 01 natural sciences Cell wall 03 medical and health sciences chemistry.chemical_compound Animal science Anthesis Lignin lcsh:SB1-1110 Dry matter Allele education Original Research education.field_of_study food and beverages Neutral Detergent Fiber 030104 developmental biology chemistry Agronomy digestibility cell wall 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science Frontiers in Plant Science, Vol 8 (2017) |
| ISSN: | 1664-462X |
| DOI: | 10.3389/fpls.2017.01472 |
| Popis: | The plant cell wall plays vital roles in various aspects of the plant life cycle. It provides a basic structure for cells and gives mechanical rigidity to the whole plant. Some complex cell wall components are involved in signal transduction during pathogenic infection and pest infestations. Moreover, the lignification level of cell walls strongly influences the digestibility of forage plants. To determine the genetic bases of cell wall components and digestibility, quantitative trait locus (QTL) analyses for 6 related traits were performed using a recombinant inbred line (RIL) population from a cross between Zheng58 and HD568. Eight QTL for in vitro neutral detergent fiber digestibility ( IVNDFD) were observed, out of which only two increasing alleles came from HD568. Three QTL out of ten with alleles increasing in vitro dry matter digestibility (IVDMD) also originated from HD 568. Five to ten QTL were detected for lignin, cellulose content, acid detergent fiber (ADF) and neutral detergent fiber (NDF)content. Among these results, 29.8% (14/47) of QTL explained > 10% of the phenotypic variation in the RIL population, whereas 70.2% (33/47) explained ≤ 10%. These results revealed that in maize stalks, a few large-effect QTL and a number of minor-effect QTL contributed to most of the genetic components involved in cell wall biosynthesis and digestibility. |
| Databáze: | OpenAIRE |
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