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Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance

Rice is a strictly self-pollinating crop. However, in hybrid rice seed production, an effective male sterility system is used to produce hybrid seed in bulk. In hybrid rice system, the pollen grains of cytoplasmic male sterile (CMS) are sterile and the female organ of the CMS depends on the fertile...

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Main Authors: Hashim, Shahida, Ding, Phebe, Ismail, Mohd Firdaus, Ramli, Asfaliza
Format: Article
Language:English
Published: Lismore 2021
Online Access:http://psasir.upm.edu.my/id/eprint/97361/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/97361/
https://www.cropj.com/issues2021.html
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spelling my.upm.eprints.973612022-09-05T08:39:56Z http://psasir.upm.edu.my/id/eprint/97361/ Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance Hashim, Shahida Ding, Phebe Ismail, Mohd Firdaus Ramli, Asfaliza Rice is a strictly self-pollinating crop. However, in hybrid rice seed production, an effective male sterility system is used to produce hybrid seed in bulk. In hybrid rice system, the pollen grains of cytoplasmic male sterile (CMS) are sterile and the female organ of the CMS depends on the fertile pollen released by the maintainer or restorer lines via out-crossing or cross-pollination in order to produce seed. Floral trait and flowering behavior of CMS and its corresponding maintainer or restorer lines are essential factors in hybrid rice seed production because they influenced the out-crossing or cross-pollination between parental lines. Two local CMSs and their corresponding maintainer lines were developed through breeding program in Malaysian Agricultural Research and Development Institute (MARDI) namely 0025A/0025B and 0047A/0047B. This study was carried out on floral traits and flowering behavior of these two hybrid line. Present studies have shown that there were variations between the CMS and its maintainer lines whether on floral trait or flowering behavior for both hybrid rice combinations. The results showed that stigma characters for both 0025A and 0047 were superior than their respective maintainers. Therefore, it is expected that the out-crossing rate would be high. Seeding date intervals need to be done on 0025A/0025B during nursery stage because the on-set of flowering between parental lines was significantly different. Panicle of both CMS was also classified as just exserted and partially-exserted and application of exogenous hormones such as gibberellic acid was useful to improve panicle elongation and consequently increase the seed set and yield. Correlation study indicates that the stigma area of both 0025A and 0047A has significant positive correlation with out-crossing rate. Lismore 2021 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/97361/1/ABSTRACT.pdf Hashim, Shahida and Ding, Phebe and Ismail, Mohd Firdaus and Ramli, Asfaliza (2021) Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance. Australian Journal of Crop Science, 15 (2). 180 - 186. ISSN 1835-2707 https://www.cropj.com/issues2021.html 10.21475/ajcs.21.15.02.p1732
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Rice is a strictly self-pollinating crop. However, in hybrid rice seed production, an effective male sterility system is used to produce hybrid seed in bulk. In hybrid rice system, the pollen grains of cytoplasmic male sterile (CMS) are sterile and the female organ of the CMS depends on the fertile pollen released by the maintainer or restorer lines via out-crossing or cross-pollination in order to produce seed. Floral trait and flowering behavior of CMS and its corresponding maintainer or restorer lines are essential factors in hybrid rice seed production because they influenced the out-crossing or cross-pollination between parental lines. Two local CMSs and their corresponding maintainer lines were developed through breeding program in Malaysian Agricultural Research and Development Institute (MARDI) namely 0025A/0025B and 0047A/0047B. This study was carried out on floral traits and flowering behavior of these two hybrid line. Present studies have shown that there were variations between the CMS and its maintainer lines whether on floral trait or flowering behavior for both hybrid rice combinations. The results showed that stigma characters for both 0025A and 0047 were superior than their respective maintainers. Therefore, it is expected that the out-crossing rate would be high. Seeding date intervals need to be done on 0025A/0025B during nursery stage because the on-set of flowering between parental lines was significantly different. Panicle of both CMS was also classified as just exserted and partially-exserted and application of exogenous hormones such as gibberellic acid was useful to improve panicle elongation and consequently increase the seed set and yield. Correlation study indicates that the stigma area of both 0025A and 0047A has significant positive correlation with out-crossing rate.
format Article
author Hashim, Shahida
Ding, Phebe
Ismail, Mohd Firdaus
Ramli, Asfaliza
spellingShingle Hashim, Shahida
Ding, Phebe
Ismail, Mohd Firdaus
Ramli, Asfaliza
Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance
author_facet Hashim, Shahida
Ding, Phebe
Ismail, Mohd Firdaus
Ramli, Asfaliza
author_sort Hashim, Shahida
title Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance
title_short Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance
title_full Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance
title_fullStr Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance
title_full_unstemmed Floral traits and flowering behaviors of Malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance
title_sort floral traits and flowering behaviors of malaysia rice cytoplasmic male sterile and maintainer lines and its relationship with out-crossing performance
publisher Lismore
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/97361/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/97361/
https://www.cropj.com/issues2021.html
_version_ 1744355327164284928
score 13.211869

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