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A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia

The movement from transplanting to direct seeding has brought weedy rice problems in Malaysia’s rice granary areas. Weedy rice (Oryza spp.) is very difficult to control compared to other weeds due its close genetic relationship to the cultivated rice (Oryza sativa L.), therefore it cannot be control...

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Main Authors: Anuar, Nur Hidayatul Shuhada, Mazlan, Norida, Engku Ariff, Engku Ahmad Khairi, Juraimi, Abdul Shukor, Yusop, Mohd Rafii
Format: Article
Language:English
Published: International Society for Southeast Asian Agricultural Sciences 2014
Online Access:http://psasir.upm.edu.my/id/eprint/36139/1/A%20comparative%20study%20of%20vegetative%20and%20reproductive%20growth%20of%20local%20weedy%20and%20Clearfield.pdf
http://psasir.upm.edu.my/id/eprint/36139/
http://www.issaas.org/journal/v20/01/
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spelling my.upm.eprints.361392015-08-24T03:16:50Z http://psasir.upm.edu.my/id/eprint/36139/ A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia Anuar, Nur Hidayatul Shuhada Mazlan, Norida Engku Ariff, Engku Ahmad Khairi Juraimi, Abdul Shukor Yusop, Mohd Rafii The movement from transplanting to direct seeding has brought weedy rice problems in Malaysia’s rice granary areas. Weedy rice (Oryza spp.) is very difficult to control compared to other weeds due its close genetic relationship to the cultivated rice (Oryza sativa L.), therefore it cannot be controlled with conventional rice herbicides. Recently, a new technology for controlling weedy rice in rice fields which is known as Clearfield® Production System has been introduced by discovering the combination of herbicide imidazolinone and resistant trait containing variety. Two cultivars have been released by Malaysia known as MR 220CL1 and MR 220CL2 which were derived from crosses between CL1770 from Louisiana State University with a Malaysian local rice variety, MR 220. The objective of the study is to understand the growth patterns (vegetative and reproductive) of four different weedy rice morphotypes and two variants of Clearfield® rice in Malaysia. Weedy morphotypes were observed being significantly taller in all growth stages compared to Clearfield®. Tillering abilities of weedy morphotypes were not different from Clearfield® variants except for WR4 at 60 days after seeding (DAS). Flowering and maturity periods observed in weedy morphotypes were ranged widely where all weedy morphotypes flowered 10 to 20 days later than the Clearfield® rice varieties. Understanding all these morphological and physiological characteristics of weedy rice is useful to improve the weedy rice management and good agricultural practices for better control of escaped weedy rice in the Clearfield® planting areas. International Society for Southeast Asian Agricultural Sciences 2014-06 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/36139/1/A%20comparative%20study%20of%20vegetative%20and%20reproductive%20growth%20of%20local%20weedy%20and%20Clearfield.pdf Anuar, Nur Hidayatul Shuhada and Mazlan, Norida and Engku Ariff, Engku Ahmad Khairi and Juraimi, Abdul Shukor and Yusop, Mohd Rafii (2014) A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia. Journal of International Society for Southeast Asian Agricultural Sciences, 20 (1). pp. 41-51. ISSN 0859-3132 http://www.issaas.org/journal/v20/01/
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 The movement from transplanting to direct seeding has brought weedy rice problems in Malaysia’s rice granary areas. Weedy rice (Oryza spp.) is very difficult to control compared to other weeds due its close genetic relationship to the cultivated rice (Oryza sativa L.), therefore it cannot be controlled with conventional rice herbicides. Recently, a new technology for controlling weedy rice in rice fields which is known as Clearfield® Production System has been introduced by discovering the combination of herbicide imidazolinone and resistant trait containing variety. Two cultivars have been released by Malaysia known as MR 220CL1 and MR 220CL2 which were derived from crosses between CL1770 from Louisiana State University with a Malaysian local rice variety, MR 220. The objective of the study is to understand the growth patterns (vegetative and reproductive) of four different weedy rice morphotypes and two variants of Clearfield® rice in Malaysia. Weedy morphotypes were observed being significantly taller in all growth stages compared to Clearfield®. Tillering abilities of weedy morphotypes were not different from Clearfield® variants except for WR4 at 60 days after seeding (DAS). Flowering and maturity periods observed in weedy morphotypes were ranged widely where all weedy morphotypes flowered 10 to 20 days later than the Clearfield® rice varieties. Understanding all these morphological and physiological characteristics of weedy rice is useful to improve the weedy rice management and good agricultural practices for better control of escaped weedy rice in the Clearfield® planting areas.
format Article
author Anuar, Nur Hidayatul Shuhada
Mazlan, Norida
Engku Ariff, Engku Ahmad Khairi
Juraimi, Abdul Shukor
Yusop, Mohd Rafii
spellingShingle Anuar, Nur Hidayatul Shuhada
Mazlan, Norida
Engku Ariff, Engku Ahmad Khairi
Juraimi, Abdul Shukor
Yusop, Mohd Rafii
A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia
author_facet Anuar, Nur Hidayatul Shuhada
Mazlan, Norida
Engku Ariff, Engku Ahmad Khairi
Juraimi, Abdul Shukor
Yusop, Mohd Rafii
author_sort Anuar, Nur Hidayatul Shuhada
title A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia
title_short A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia
title_full A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia
title_fullStr A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia
title_full_unstemmed A comparative study of vegetative and reproductive growth of local weedy and Clearfield® rice varieties in Malaysia
title_sort comparative study of vegetative and reproductive growth of local weedy and clearfield® rice varieties in malaysia
publisher International Society for Southeast Asian Agricultural Sciences
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/36139/1/A%20comparative%20study%20of%20vegetative%20and%20reproductive%20growth%20of%20local%20weedy%20and%20Clearfield.pdf
http://psasir.upm.edu.my/id/eprint/36139/
http://www.issaas.org/journal/v20/01/
_version_ 1643831660528009216
score 13.211869

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