Assessment of gene flow from a herbicide-resistant indica rice (Oryza sativa L.) to the Costa Rican weedy rice (Oryza sativa) in Tropical America: factors affecting hybridization rates and characterization of F1 hybrids

2009 ◽  
Vol 18 (4) ◽  
pp. 633-647 ◽  
Author(s):  
Elena R. Sanchez Olguin ◽  
Griselda Arrieta-Espinoza ◽  
Jorge A. Lobo ◽  
Ana M. Espinoza-Esquivel
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Costa Rican ◽  
F1 Hybrids ◽  
Weedy Rice ◽  
Factors Affecting ◽  
Herbicide Resistant ◽  
Tropical America

scholarly journals Characterization of near-isogenic lines carrying QTL for high spikelet number with the genetic background of an indica rice variety IR64 (Oryza sativa L.)

2012 ◽  
Vol 62 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Daisuke Fujita ◽  
Analiza G. Tagle ◽  
Leodegario A. Ebron ◽  
Yoshimichi Fukuta ◽  
Nobuya Kobayashi
Keyword(s):  
Oryza Sativa ◽  
Genetic Background ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Rice Variety ◽  
Near Isogenic Lines ◽  
Spikelet Number ◽  
Isogenic Lines

Status of Weedy Rice (Oryza sativa L.) Infestation and Management Practices in Southern Brazil

Weed Science ◽  
2021 ◽  
pp. 1-35
Author(s):  
Luis A. Avila ◽  
José A. Noldin ◽  
Carlos H. P. Mariot ◽  
Paulo F.S. Massoni ◽  
Marcus V. Fipke ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Management Practices ◽  
Oryza Sativa L ◽  
Conventional Tillage ◽  
Weedy Rice ◽  
Extension Agents ◽  
Southern Brazil ◽  
Herbicide Resistant ◽  
Rice Area ◽  
Infestation Status

Abstract Weedy rice (WR) (Oryza sativa L.) is the most troublesome weed infesting rice paddies in Brazil. Several changes have occurred in this region regarding crop management, especially WR control based on the Clearfield™ (CL) Rice Production System launched in 2003. This survey’s objective was to evaluate the WR infestation status by assessing the producers’ perception and the management practices used in southern Brazil after eighteen years of CL use in Brazil. Rice consultants and extension agents distributed a questionnaire with 213 producers in the Rio Grande do Sul (RS) and Santa Catarina (SC) state in the 2018/19 growing season. In RS, most farms are larger than 150 ha, farmers use minimal or conventional tillage, permanent flooding, adopted the CL system for more than two years, use clomazone PRE tank-mixed with glyphosate at the rice spiking stage, and use crop rotation with soybean [Glycine max (L.) Merr.] or pasture. In SC, rice farms are small, averaging from 20 to 30 ha, farmers predominantly plant pre-germinated rice and do not rotate rice with other crops and roguing is practiced. Comparing both states, the CL System is used in 99.5, and 69.3% of the total surveyed rice area in RS and SC, respectively. Imidazolinone-resistant WR is present in 68.4 and 26.6% of rice farms in RS and SC, respectively. Rice cultivation in Brazil is currently coexisting with WR with minimal integration of control methods. However, integrated practices can control this weed and are fundamental to the sustainability of systems based on herbicide-resistant rice cultivars.

Spread of herbicide-resistant weedy rice (red rice, Oryza sativa L.) after 5 years of Clearfield rice cultivation in Italy

Plant Biology ◽  
2012 ◽  
Vol 14 (5) ◽  
pp. 751-759 ◽  
Author(s):  
M. Busconi ◽  
D. Rossi ◽  
C. Lorenzoni ◽  
G. Baldi ◽  
C. Fogher
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Rice Cultivation ◽  
Weedy Rice ◽  
Red Rice ◽  
Herbicide Resistant ◽  
Clearfield Rice

scholarly journals Characterization of Pi13, a blast resistance gene that maps to chromosome 6 in indica rice (Oryza sativa L. variety, Kasalath)

2011 ◽  
Vol 61 (3) ◽  
pp. 251-259 ◽  
Author(s):  
Takeshi Ebitani ◽  
Nagao Hayashi ◽  
Motoyasu Omoteno ◽  
Hidenobu Ozaki ◽  
Masahiro Yano ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Resistance Gene ◽  
Oryza Sativa L ◽  
Blast Resistance ◽  
Indica Rice ◽  
Chromosome 6 ◽  
Blast Resistance Gene

Characterization of factors affecting plantlet regeneration from rice (Oryza sativa L.) callus

1992 ◽  
Vol 105 (2) ◽  
pp. 227-233 ◽  
Author(s):  
Masayoshi Tsukahara ◽  
Takayasu Hirosawa
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Plantlet Regeneration ◽  
Factors Affecting
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