Results 41 to 50 of about 537,351 (191)

Weedy rice (Oryza sativa) II. Response of Weedy Rice to Seed Burial and Flooding Depth

open access: yes, 2012
Weedy rice is a serious problem of cultivated rice in most of the rice-growing areas in Asia, causing increased production costs and yield losses in rice. A study was conducted to determine the response of weedy rice accessions from India (IWR), Malaysia
Chauhan, Bhagirath Singh
core   +1 more source

The Role of Standing Variation in the Evolution of Weedines Traits in South Asian Weedy Rice (Oryza spp.)

open access: yesG3: Genes, Genomes, Genetics, 2018
Weedy rice (Oryza spp.) is a problematic weed of cultivated rice (O. sativa) around the world. Recent studies have established multiple independent evolutionary origins of weedy rice, raising questions about the traits and genes that are essential for ...
Zhongyun Huang   +7 more
doaj   +1 more source

Genomic divergence during feralization reveals both conserved and distinct mechanisms of parallel weediness evolution

open access: yesCommunications Biology, 2021
Imaizumi et al. examine the origin and evolution of Japanese weedy rice and document the role of hybridization in weedy rice origins. Their results show that there is parallel evolution in rice feralization, and document the temperate and tropical ...
Toshiyuki Imaizumi   +6 more
doaj   +1 more source

Occurrence pattern and morphological polymorphism of Chinese weedy rice

open access: yesJournal of Integrative Agriculture, 2023
Rice, the main food crop in China, has been sporadically reported to suffer from weedy rice infestation. However, the overall occurrence and distribution pattern of Chinese weedy rice remains unclear because a systematic survey has not been conducted. In
Hao-quan WANG   +8 more
doaj   +1 more source

Morphological Relationships between Weedy Rice Morphotypes and Commercial Rice Varieties in Perak, Malaysia

open access: yesInternational Journal of Bio-Resource and Stress Management, 2023
Weedy rice has become a major problem in Malaysia for the last few decades. A com­parative morphological study was conducted to characterize weedy rice population by collecting weedy rice morphotypes from six sites among the Perak rice granaries in ...
Q. N. Ahmed, H. Zainudin, A. S. Othman
doaj  

Conspecific crop-weed introgression influences evolution of weedy rice (Oryza sativa f. spontanea) across a geographical range.

open access: yesPLoS ONE, 2011
BackgroundIntrogression plays an important role in evolution of plant species via its influences on genetic diversity and differentiation. Outcrossing determines the level of introgression but little is known about the relationships of outcrossing rates,
Han-Bing Xia   +4 more
doaj   +1 more source

Expression of genes in cultivated rice and weedy rice in competition

open access: yesAustralian Journal of Crop Science, 2016
The competition for resources such as light and nitrogen between red rice and cultivated rice can trigger responses in plants that interfere with growth and productivity as well as the expression of genes related to competition-induced stress. Due to its sensitivity, accuracy, and specificity, real-time reverse transcription PCR (RT-qPCR) is an ...
Marcos Andre Nohato   +5 more
openaire   +1 more source

Effect of rice establishment methods on weedy rice (Oryza sativa L.) infestation and grain yield of cultivated rice (O. sativa L.) in Sri Lanka

open access: yes, 2011
Weedy rice is a great threat to rice production in Sri Lanka. Selective herbicides to manage weedy rice in conventional rice cultivars are not available in Sri Lanka.
Kulatunga, Sakinda   +4 more
core   +1 more source

Identification of SER-653-ASN mutation conferring resistance to imidazolinone in Malaysian weedy rice [PDF]

open access: yes
Background: The prevalence of weedy rice infestation has been shown to cause a significant reduction in Malaysian rice yield. The introduction of the Clearfield© Production System has significantly reduce weedy rice infestation, but its mismanagement has
Jamil, Mohammad Azizi   +2 more
core   +1 more source

Exploratory survey of rice growing practices identifies perceptions and management of weedy rice

open access: yesCalifornia Agriculture
Weedy rice (_Oryza sativa_ L. spp.) is an emerging weed in California rice production. To address weedy rice issues and improve extension efforts, information is needed about the prevalence of growing practices that may contribute to or prevent weedy ...
Elizabeth Karn   +3 more
doaj   +1 more source

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