Objective] This study almed to expIore a suitabIe fIue-cured tobacco young seedIings cuItivation technique for tobacco-producing areas in Panzhihua. [Method] The randomized bIock design was used to conduct a two-facto...Objective] This study almed to expIore a suitabIe fIue-cured tobacco young seedIings cuItivation technique for tobacco-producing areas in Panzhihua. [Method] The randomized bIock design was used to conduct a two-factor test of fIoating pate and seedIing age. [Result] The young seedIings cuItivation technique re-duced the cuItivation cost by 76.6%; the optimum seedIing age was 45 d; the fIoat-ing pIate with specification of 595 hoIes/pIate couId best improve the cuItivation effi-ciency; and the Ieaf-uncut young seedIings cuItivation technique significantIy reduced the incidence of disease in tobacco pIants. In short, the production benefit of young seedIings cuItivation technique is significantIy higher than that of conventional tech-nique. [Conclusion] Referring to the young seedIings cuItivation techniques in Guizhou and Yunnan and according to the actual situation in tobacco-producing ar-eas of Panzhihua, the fIue-cured tobacco young seedIings cuItivation technique, which was suitabIe for tobacco-producing areas of Panzhihua, was deveIoped. This cuItivation technique can be used to provide tobacco seedIings for under-fiIm cuItiva-tion. In addition, it wiI provide a reference for reducing cuItivation costs, reducing environmental destruction, reducing incidence of disease and improving production efficiency of tobacco Ieaves.展开更多
The selection and application of salt tolerance varieties in peanut is impor- tant for the exploitation of saline soil. In this study, 41 peanut varieties were select- ed for the evaluation of salt tolerance in both g...The selection and application of salt tolerance varieties in peanut is impor- tant for the exploitation of saline soil. In this study, 41 peanut varieties were select- ed for the evaluation of salt tolerance in both germination and young seedling stage. The results showed the germination and growth of peanut were significantly inhibited by salt stress, which were enhanced by salt concentration increasing. The 0.5% NaCI was selected as the most suitable concentration for further identification, and the characters in germination stage （including the relative germination potential, relative germination rate and germination index） and young seedling stage （including relative main root length, seedling height, fresh weight, dry weight, et aL） were measured. Cluster analysis showed the varieties could be divided into different groups, and 9 and 3 salt-tolerant varieties were identified in the two stages, respec- tively, including two varieties performed well in both two stages, which could be useful for the breeding of new salt tolerance varieties and the study of salt toler- ance mechanism.展开更多
文摘Objective] This study almed to expIore a suitabIe fIue-cured tobacco young seedIings cuItivation technique for tobacco-producing areas in Panzhihua. [Method] The randomized bIock design was used to conduct a two-factor test of fIoating pate and seedIing age. [Result] The young seedIings cuItivation technique re-duced the cuItivation cost by 76.6%; the optimum seedIing age was 45 d; the fIoat-ing pIate with specification of 595 hoIes/pIate couId best improve the cuItivation effi-ciency; and the Ieaf-uncut young seedIings cuItivation technique significantIy reduced the incidence of disease in tobacco pIants. In short, the production benefit of young seedIings cuItivation technique is significantIy higher than that of conventional tech-nique. [Conclusion] Referring to the young seedIings cuItivation techniques in Guizhou and Yunnan and according to the actual situation in tobacco-producing ar-eas of Panzhihua, the fIue-cured tobacco young seedIings cuItivation technique, which was suitabIe for tobacco-producing areas of Panzhihua, was deveIoped. This cuItivation technique can be used to provide tobacco seedIings for under-fiIm cuItiva-tion. In addition, it wiI provide a reference for reducing cuItivation costs, reducing environmental destruction, reducing incidence of disease and improving production efficiency of tobacco Ieaves.
文摘The selection and application of salt tolerance varieties in peanut is impor- tant for the exploitation of saline soil. In this study, 41 peanut varieties were select- ed for the evaluation of salt tolerance in both germination and young seedling stage. The results showed the germination and growth of peanut were significantly inhibited by salt stress, which were enhanced by salt concentration increasing. The 0.5% NaCI was selected as the most suitable concentration for further identification, and the characters in germination stage （including the relative germination potential, relative germination rate and germination index） and young seedling stage （including relative main root length, seedling height, fresh weight, dry weight, et aL） were measured. Cluster analysis showed the varieties could be divided into different groups, and 9 and 3 salt-tolerant varieties were identified in the two stages, respec- tively, including two varieties performed well in both two stages, which could be useful for the breeding of new salt tolerance varieties and the study of salt toler- ance mechanism.
