Because high temperatures impair rice production,it is desirable to elucidate the regulatory mechanisms involved in rice response to heat stress.The objectives of this study were to identify candidate genes and charac...Because high temperatures impair rice production,it is desirable to elucidate the regulatory mechanisms involved in rice response to heat stress.The objectives of this study were to identify candidate genes and characterize their response patterns during rice adaptation to high temperatures at the seedling stage.Ten heat-associated quantitative-trait loci were identified in a genome-wide association study.Comparison of transcript abundances in heat-sensitive and heat-tolerant rice pools under heat stress revealed approximately 400 differentially expressed genes.The expression of genes from heatsensitive accessions changed more than those from heat-tolerant accessions under heat stress.Alternative splicing(AS)events responded to heat stress in rice.The types of AS variants significant different between the heat-sensitive and heat-tolerant accessions.Expression patterns differing between the heat-sensitive and heat-tolerant accessions were identified for genes known to be involved in heat stress.We identified eleven genes associated with rice heat stress response.These genes could be pyramided to breed heat-tolerant rice accessions.展开更多
An interspecific hybrid line pf9279 was obtained by proto-plast fusion between 02428(japonica, with a wide com-patibility gene) and CNW240 (O. officinalis, fromMalaysia) at CNRRI in 1992. Possible introgression of
The vascular bundle in plants plays an important role intransportation of photosynthetic products, mineral nutri-ents, water, arid so on. Significant positive correlationswere found between grain yield, panicle traits...The vascular bundle in plants plays an important role intransportation of photosynthetic products, mineral nutri-ents, water, arid so on. Significant positive correlationswere found between grain yield, panicle traits and the No.of peduncle vascular bundles. So, it is very important tostudy the inheritance of peduncle vascular bundle, whichis a quantitative trait.展开更多
Japanese japonica rice commonlyprovides with an ovicidal resistanceagainst the whitebacked planthopper(WBPH). Similarly, ovicidal activi-ty was also found to play a significantrole in a stable field resistance toWBPH ...Japanese japonica rice commonlyprovides with an ovicidal resistanceagainst the whitebacked planthopper(WBPH). Similarly, ovicidal activi-ty was also found to play a significantrole in a stable field resistance toWBPH in some Chinese japonicarice. Rice varieties with ovicidal re-展开更多
The effects of large granule urea(LOU) to irrigated rice were studied at the farm of China National Rice Research Institute. Experiment soil contained organic C 19.0g/kg, total N 2.2g/kg, total P 0.60g/kg, total K 20....The effects of large granule urea(LOU) to irrigated rice were studied at the farm of China National Rice Research Institute. Experiment soil contained organic C 19.0g/kg, total N 2.2g/kg, total P 0.60g/kg, total K 20.1g/kg and pH6.9.展开更多
Located in the cold region (53 ° 29′ N) in Heihe of Heilongjiang Province, Mohe County is the northern most part in China. The county, with the duration for rice growth limited to only 100-120 d and the cumulati...Located in the cold region (53 ° 29′ N) in Heihe of Heilongjiang Province, Mohe County is the northern most part in China. The county, with the duration for rice growth limited to only 100-120 d and the cumulative temperature ( over 10℃ ) reaching only around 2000 ℃, had been regarded as a ""restricted zone"" for rice production.展开更多
Bacterial blight (BB) caused by Xanthomonas oryzae pv.oryzae (Xoo) is a major rice disease in China. 138 introduced cultivars (lines) were tested on pathogenicity with seven pathotypes of BB at CNRRI Experiment Statio...Bacterial blight (BB) caused by Xanthomonas oryzae pv.oryzae (Xoo) is a major rice disease in China. 138 introduced cultivars (lines) were tested on pathogenicity with seven pathotypes of BB at CNRRI Experiment Station during Apt-Oct,1991.展开更多
To transfer the rice anther culture technology from successfully employing programs to emerging programs in rice-producing countries, the International Workshop on Anther Culture for Rice Breeders was held at CNRRI, 1...To transfer the rice anther culture technology from successfully employing programs to emerging programs in rice-producing countries, the International Workshop on Anther Culture for Rice Breeders was held at CNRRI, 12-24 Oct, 1992. The Sponsors were Chinese Commission on Science and Technology and Rockefeller Foundation.展开更多
Buprofezin is a new insect chitin-synthesizer inhibitor for rice plant hoppers(Homoptera) and leaf-hoppers (Homoptera) control.Sreedhara Rao(1987) reported its antifertility effects on rice leaf folder (RLF,Lepidopter...Buprofezin is a new insect chitin-synthesizer inhibitor for rice plant hoppers(Homoptera) and leaf-hoppers (Homoptera) control.Sreedhara Rao(1987) reported its antifertility effects on rice leaf folder (RLF,Lepidoptera).In this study,two buprofezin formulations,namely 25% Pu-shi-ling(wp) and 35% Shi-wen-ling(wp) with teo concentrations of 125mg/kg and 62.5mg/kg each,展开更多
In 1981-1983, the frequency and range of the mutants induced by colchicine were investigated in M2 and M3 of two indica-rice cultivars.Seedlings of M2 and M3 were treated with 0.05% colchicine solution at 4-5 leaf stage.
We evaluated the antifeeding effect of sublethal doses of Cypermethrin and new insecticide Lamdacyhalothrin from the ICI Agrochemicals against rice green leafhopper (GLH). Newly-emerged (0-1 d) females were used in th...We evaluated the antifeeding effect of sublethal doses of Cypermethrin and new insecticide Lamdacyhalothrin from the ICI Agrochemicals against rice green leafhopper (GLH). Newly-emerged (0-1 d) females were used in the experiments with five replications for each. Tested females were topically treated with appropriate acetone solutions at 0.2 μl/ female.展开更多
基金supported by the Agricultural Science and Technology Innovation Program,Shenzhen Science and Technology Program(KQTD2016113010482651)Projects Subsidized by Special Funds for Science Technology Innovation and Industrial Development of Shenzhen Dapeng New District(RC201901-05)+2 种基金Guangdong Basic and Applied Basic Research Foundation(2019A1515110557)the National Natural Science Foundation of China(31771887)Genome-wide Association Study of High Nitrogen Use Efficiency Related Traits in Rice and Breeding Application(2020-KYYWF-0237)。
文摘Because high temperatures impair rice production,it is desirable to elucidate the regulatory mechanisms involved in rice response to heat stress.The objectives of this study were to identify candidate genes and characterize their response patterns during rice adaptation to high temperatures at the seedling stage.Ten heat-associated quantitative-trait loci were identified in a genome-wide association study.Comparison of transcript abundances in heat-sensitive and heat-tolerant rice pools under heat stress revealed approximately 400 differentially expressed genes.The expression of genes from heatsensitive accessions changed more than those from heat-tolerant accessions under heat stress.Alternative splicing(AS)events responded to heat stress in rice.The types of AS variants significant different between the heat-sensitive and heat-tolerant accessions.Expression patterns differing between the heat-sensitive and heat-tolerant accessions were identified for genes known to be involved in heat stress.We identified eleven genes associated with rice heat stress response.These genes could be pyramided to breed heat-tolerant rice accessions.
文摘An interspecific hybrid line pf9279 was obtained by proto-plast fusion between 02428(japonica, with a wide com-patibility gene) and CNW240 (O. officinalis, fromMalaysia) at CNRRI in 1992. Possible introgression of
文摘The vascular bundle in plants plays an important role intransportation of photosynthetic products, mineral nutri-ents, water, arid so on. Significant positive correlationswere found between grain yield, panicle traits and the No.of peduncle vascular bundles. So, it is very important tostudy the inheritance of peduncle vascular bundle, whichis a quantitative trait.
文摘Japanese japonica rice commonlyprovides with an ovicidal resistanceagainst the whitebacked planthopper(WBPH). Similarly, ovicidal activi-ty was also found to play a significantrole in a stable field resistance toWBPH in some Chinese japonicarice. Rice varieties with ovicidal re-
文摘The effects of large granule urea(LOU) to irrigated rice were studied at the farm of China National Rice Research Institute. Experiment soil contained organic C 19.0g/kg, total N 2.2g/kg, total P 0.60g/kg, total K 20.1g/kg and pH6.9.
文摘Located in the cold region (53 ° 29′ N) in Heihe of Heilongjiang Province, Mohe County is the northern most part in China. The county, with the duration for rice growth limited to only 100-120 d and the cumulative temperature ( over 10℃ ) reaching only around 2000 ℃, had been regarded as a ""restricted zone"" for rice production.
文摘Bacterial blight (BB) caused by Xanthomonas oryzae pv.oryzae (Xoo) is a major rice disease in China. 138 introduced cultivars (lines) were tested on pathogenicity with seven pathotypes of BB at CNRRI Experiment Station during Apt-Oct,1991.
文摘To transfer the rice anther culture technology from successfully employing programs to emerging programs in rice-producing countries, the International Workshop on Anther Culture for Rice Breeders was held at CNRRI, 12-24 Oct, 1992. The Sponsors were Chinese Commission on Science and Technology and Rockefeller Foundation.
文摘Buprofezin is a new insect chitin-synthesizer inhibitor for rice plant hoppers(Homoptera) and leaf-hoppers (Homoptera) control.Sreedhara Rao(1987) reported its antifertility effects on rice leaf folder (RLF,Lepidoptera).In this study,two buprofezin formulations,namely 25% Pu-shi-ling(wp) and 35% Shi-wen-ling(wp) with teo concentrations of 125mg/kg and 62.5mg/kg each,
文摘In 1981-1983, the frequency and range of the mutants induced by colchicine were investigated in M2 and M3 of two indica-rice cultivars.Seedlings of M2 and M3 were treated with 0.05% colchicine solution at 4-5 leaf stage.
文摘We evaluated the antifeeding effect of sublethal doses of Cypermethrin and new insecticide Lamdacyhalothrin from the ICI Agrochemicals against rice green leafhopper (GLH). Newly-emerged (0-1 d) females were used in the experiments with five replications for each. Tested females were topically treated with appropriate acetone solutions at 0.2 μl/ female.