The efficiency of 7 treatment methods for breaking dormancy in zoysiagrass ( Zoysia japonica Steud.) seeds was synchronously compared. Two methods in which seeds soaking in 30% NaOH solution for 20 or 80 minutes were ...The efficiency of 7 treatment methods for breaking dormancy in zoysiagrass ( Zoysia japonica Steud.) seeds was synchronously compared. Two methods in which seeds soaking in 30% NaOH solution for 20 or 80 minutes were the optimum for breaking dormancy of seeds due to their simple and easy operation in techniques, economic and rapid effectiveness in performance and high germination rates (77.6% and 88.0% respectively).展开更多
The study was conducted to determine the optimum fertilizer-N application rate formaximum seed yields of Zoysiagrass stands from seeding and transplant respectively, atJiaozhou, Shandong Province, China from 2001 to 2...The study was conducted to determine the optimum fertilizer-N application rate formaximum seed yields of Zoysiagrass stands from seeding and transplant respectively, atJiaozhou, Shandong Province, China from 2001 to 2003. In the third year after establishment,seed yields and yield components for both stands showed a similar response to fertilizer-N. Maximum fertile tiller numbers (3342 heads m-2 and 2941 heads m-2 from stands seeded inrows and transplanted, respectively) and the highest seed yields (844.50kgha-1 and 874.65kg ha-1 from stands seeded in rows and transplanted, respectively) were obtained at a Nfertilizer rate of 20kgha-1 in autumn and 10kgha-1 in spring (30kgha-1 N in total). Thefertile tillers and seed yields decreased with further increasing of N fertilizer rate.Fertilizer-N application could increase the length of spike, spikelets per fertiletiller, seed number per spike, setting percentage and thousand seed weight. The 1000-seed weight and the length of spike from transplant plots were higher than that fromseeding plots. The optimal harvest time of zoysiagrass at Jiaozhou was on the 36th dayafter peak anthesis, near June 15th, when the seed moisture content was 26-28%.展开更多
[Objective] The paper was to analyze the expression and response mechanism of NCED gene of Zoysia japonica in initial infection stage of Rhizoctonia solani. [Method] The NCED gene fragments of Z. japonica‘Zenith＇wer...[Objective] The paper was to analyze the expression and response mechanism of NCED gene of Zoysia japonica in initial infection stage of Rhizoctonia solani. [Method] The NCED gene fragments of Z. japonica‘Zenith＇were screened and cloned on the basis of transcriptome data. The expression patterns of NCED gene in initial infection stage of R. solani（ 0-48 h） were obtained via real-time quantitative PCR. [Result] The expression level of NCED gene in stress treatment was higher than that without infection,which first increased then decreased with the extension of time,and reached the maximum at 36 h. Further detection of ABA level in‘Zenith＇roots showed that the change trend of ABA level within 0-48 h was consistent with the expression pattern of NCED gene,and flattened out after 48 h. [Conclusion] NCED gene regulates the synthesis of phytohormone ABA and probably further involves in plant disease resistance.展开更多
文摘The efficiency of 7 treatment methods for breaking dormancy in zoysiagrass ( Zoysia japonica Steud.) seeds was synchronously compared. Two methods in which seeds soaking in 30% NaOH solution for 20 or 80 minutes were the optimum for breaking dormancy of seeds due to their simple and easy operation in techniques, economic and rapid effectiveness in performance and high germination rates (77.6% and 88.0% respectively).
基金The study was supported by 948 Project sponsored by the Ministry of Agriculture,China(202099).
文摘The study was conducted to determine the optimum fertilizer-N application rate formaximum seed yields of Zoysiagrass stands from seeding and transplant respectively, atJiaozhou, Shandong Province, China from 2001 to 2003. In the third year after establishment,seed yields and yield components for both stands showed a similar response to fertilizer-N. Maximum fertile tiller numbers (3342 heads m-2 and 2941 heads m-2 from stands seeded inrows and transplanted, respectively) and the highest seed yields (844.50kgha-1 and 874.65kg ha-1 from stands seeded in rows and transplanted, respectively) were obtained at a Nfertilizer rate of 20kgha-1 in autumn and 10kgha-1 in spring (30kgha-1 N in total). Thefertile tillers and seed yields decreased with further increasing of N fertilizer rate.Fertilizer-N application could increase the length of spike, spikelets per fertiletiller, seed number per spike, setting percentage and thousand seed weight. The 1000-seed weight and the length of spike from transplant plots were higher than that fromseeding plots. The optimal harvest time of zoysiagrass at Jiaozhou was on the 36th dayafter peak anthesis, near June 15th, when the seed moisture content was 26-28%.
基金Supported by National High Technology Research and Development Program("863"Program) of China(2013AA102607)
文摘[Objective] The paper was to analyze the expression and response mechanism of NCED gene of Zoysia japonica in initial infection stage of Rhizoctonia solani. [Method] The NCED gene fragments of Z. japonica‘Zenith＇were screened and cloned on the basis of transcriptome data. The expression patterns of NCED gene in initial infection stage of R. solani（ 0-48 h） were obtained via real-time quantitative PCR. [Result] The expression level of NCED gene in stress treatment was higher than that without infection,which first increased then decreased with the extension of time,and reached the maximum at 36 h. Further detection of ABA level in‘Zenith＇roots showed that the change trend of ABA level within 0-48 h was consistent with the expression pattern of NCED gene,and flattened out after 48 h. [Conclusion] NCED gene regulates the synthesis of phytohormone ABA and probably further involves in plant disease resistance.
