IRGA 431 CL, new rice variety for red rice management in Southern Brazil

Lopes, Mara Cristina Barbosa; Lopes, Sérgio Iraçu Gindri

doi:10.1590/1984-70332018v18n4c68

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…These cultivars were initially developed through induced mutations of the acetolactate synthase ( ALS ) gene (Croughan et al 1996). The first CL cultivar developed and commercialized in Brazil was IRGA 422CL (Lopes et al, 2003), obtained from the mutant line 93AS3510 (Croughan et al 1996) as the resistance gene donor. In Brazil, the so-called first-generation cultivars originated from the 93AS3510 line, which has a single point mutation in the ALS gene causing the G654E substitution (Roso et al 2010b).…”

Section: Cultivars and Crop Breedingmentioning

confidence: 99%

“…The CL rice system was made commercially available in Brazil in 2003, when the Rio Grande do Sul Rice Institute (IRGA) launched the cultivar ‘IRGA 422CL’ under a legal agreement with BASF SA (Lopes et al 2003). The stewardship program proposed by BASF (2020) included: (1) use of certified seeds, (2) application of labeled herbicides, (3) adoption of label recommendations concerning herbicide application rates and timing, (4) establishment of permanent flooding soon after the POST herbicide application, (5) roguing the weedy rice escapes, (6) planting CL varieties for no more than two consecutive growing seasons, and (7) crop rotation.…”

Section: Introductionmentioning

confidence: 99%

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Eighteen years of Clearfield™ rice in Brazil: what have we learned?

et al. 2021

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Clearfield™ (CL) rice (Oryza sativa L.) is a weedy rice (Oryza spp.; synonym = red rice) control tool that has been used in Brazil since 2003. This system includes the use of an imidazolinone (IMI)-tolerant cultivar and the application of IMI herbicides. In this review article, Brazilian weed scientists evaluate the challenges and lessons learned over 18 yr of CL use. CL system benefits include selective weedy rice control, better crop establishment during the most advantageous period of the year, and more efficient fertilizer use. In Rio Grande do Sul state, the CL system, in conjunction with other improvements, has contributed to rice grain yield gains from 5,500 kg ha−1 before 2002 to around 8,400 kg ha−1 currently. In contrast, the main problem that has arisen over this period is the rapid evolution of IMI-resistant weedy rice, caused by gene flow from CL rice cultivars. The off-label use (rate and continuous use) of IMI herbicides has contributed to the evolution of resistance in Echinochloa spp. and other weeds. IMI herbicide carryover has also affected susceptible crops grown after CL rice. Crop rotation with soybean [Glycine max (L.) Merr.] is increasing, ensuring system sustainability. The importance of minimum tillage has also become apparent. Such cultivation includes applying nonselective herbicides before sowing or just before crop emergence (at the spiking stage to eliminate as much weedy rice as possible and other weeds at an early growth stage). It also includes the use of certified seeds free of weedy rice, following label instructions for IMI herbicides, applying the herbicide PRE followed by POST, and complementary weedy rice management practices, such as roguing of surviving weedy rice plants.

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Section: Cultivars and Crop Breedingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Eighteen years of Clearfield™ rice in Brazil: what have we learned?

et al. 2021

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A Review: Growing Rice in the Controlled Environments

Al-Hashimi

2023

Biosci., Biotech. Res. Asia

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Rice (Oryza sativa L.) is the most important staple crop. Rice is a source of essential vitamins such as vitamin C and B6, carbohydrates and other nutrients such as selenium and phosphorous. About 90% of world’s rice are cultivated in Asia and Africa. China is the leading producer. It fulfills 70% income and nutrition needs of Asian population. Rice can be the potential solution to hunger and malnutrition, especially in poor, developing countries. The methods of rice growth are transplanting and cultivation media, grow in hydroponic condition and grow in soil. The production of rice is impacted by biotic stressors, which are present in a wide range of agro-climatic conditions around the world. Multiple diseases can be brought on by biotic pressures caused by climate change. To mitigate the impact of climate change and enhance rice cultivation unique germplasms are being cultivated. This review presents unique germplasm of rice and their cultivators, methods of rice cultivation, disadvantages of rice cultivation for research purpose and diseases that affect rice.

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IRGA 431 CL, new rice variety for red rice management in Southern Brazil

Cited by 2 publications

References 3 publications

Eighteen years of Clearfield™ rice in Brazil: what have we learned?

Eighteen years of Clearfield™ rice in Brazil: what have we learned?

A Review: Growing Rice in the Controlled Environments

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