Cargando…
Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China
Rice yield potential was greatly improved since the green revolution, but the occurrence of lodging often restricts the achievement of potential yield. Currently, it is still obscure about how the lodging-related traits change along with the genetic improvement in yield potential of rice, although m...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4965039/ https://www.ncbi.nlm.nih.gov/pubmed/27466812 http://dx.doi.org/10.1371/journal.pone.0160104 |
_version_ | 1782445199660679168 |
---|---|
author | Zhu, Guanglong Li, Guohui Wang, Depeng Yuan, Shen Wang, Fei |
author_facet | Zhu, Guanglong Li, Guohui Wang, Depeng Yuan, Shen Wang, Fei |
author_sort | Zhu, Guanglong |
collection | PubMed |
description | Rice yield potential was greatly improved since the green revolution, but the occurrence of lodging often restricts the achievement of potential yield. Currently, it is still obscure about how the lodging-related traits change along with the genetic improvement in yield potential of rice, although much efforts have been devoted to study the trend of and physiological mechanisms underlying changes in grain yield. Therefore, fourteen rice mega-varieties that were released and disseminated from 1930s to 2005 in China were investigated through a two-year experiment in the field condition. The results showed that large genotypic differences in lodging-related morphological traits were observed among these varieties. Lodging index (LI) of semi-dwarf varieties was significantly lower compared with that of SLX(Shenglixian). There were significant differences in LI among the semi-dwarf varieties, but no relationship between LI and the release year was found. Bending moment (BM) of semi-dwarf varieties released in 1940s-1980s was significantly lower than that of SLX. However, varieties released after 1980s had similar bending moment with SLX, but significantly higher breaking resistance (BR). The increase in both BM and BR after 1980s was related with the increase in internode diameter (ND) and stem fresh weight. Overall, this study disclosed the changing pattern of lodging-related traits in the genetic improvement of rice, and suggested that further increase in ND, internode dry weight (NDW) and dry weight per unit length (DWUL) of lower internode in modern super rice variety could effectively enhance lodging resistance and bring down LI. |
format | Online Article Text |
id | pubmed-4965039 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-49650392016-08-18 Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China Zhu, Guanglong Li, Guohui Wang, Depeng Yuan, Shen Wang, Fei PLoS One Research Article Rice yield potential was greatly improved since the green revolution, but the occurrence of lodging often restricts the achievement of potential yield. Currently, it is still obscure about how the lodging-related traits change along with the genetic improvement in yield potential of rice, although much efforts have been devoted to study the trend of and physiological mechanisms underlying changes in grain yield. Therefore, fourteen rice mega-varieties that were released and disseminated from 1930s to 2005 in China were investigated through a two-year experiment in the field condition. The results showed that large genotypic differences in lodging-related morphological traits were observed among these varieties. Lodging index (LI) of semi-dwarf varieties was significantly lower compared with that of SLX(Shenglixian). There were significant differences in LI among the semi-dwarf varieties, but no relationship between LI and the release year was found. Bending moment (BM) of semi-dwarf varieties released in 1940s-1980s was significantly lower than that of SLX. However, varieties released after 1980s had similar bending moment with SLX, but significantly higher breaking resistance (BR). The increase in both BM and BR after 1980s was related with the increase in internode diameter (ND) and stem fresh weight. Overall, this study disclosed the changing pattern of lodging-related traits in the genetic improvement of rice, and suggested that further increase in ND, internode dry weight (NDW) and dry weight per unit length (DWUL) of lower internode in modern super rice variety could effectively enhance lodging resistance and bring down LI. Public Library of Science 2016-07-28 /pmc/articles/PMC4965039/ /pubmed/27466812 http://dx.doi.org/10.1371/journal.pone.0160104 Text en © 2016 Zhu et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Zhu, Guanglong Li, Guohui Wang, Depeng Yuan, Shen Wang, Fei Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China |
title | Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China |
title_full | Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China |
title_fullStr | Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China |
title_full_unstemmed | Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China |
title_short | Changes in the Lodging-Related Traits along with Rice Genetic Improvement in China |
title_sort | changes in the lodging-related traits along with rice genetic improvement in china |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4965039/ https://www.ncbi.nlm.nih.gov/pubmed/27466812 http://dx.doi.org/10.1371/journal.pone.0160104 |
work_keys_str_mv | AT zhuguanglong changesinthelodgingrelatedtraitsalongwithricegeneticimprovementinchina AT liguohui changesinthelodgingrelatedtraitsalongwithricegeneticimprovementinchina AT wangdepeng changesinthelodgingrelatedtraitsalongwithricegeneticimprovementinchina AT yuanshen changesinthelodgingrelatedtraitsalongwithricegeneticimprovementinchina AT wangfei changesinthelodgingrelatedtraitsalongwithricegeneticimprovementinchina |