This review summarizes the main advances in cotton breeding for resistance to fusarium and verticillium wilt in the last fifty years in China. The topics discussed include main achievements, experiences, problems and ...This review summarizes the main advances in cotton breeding for resistance to fusarium and verticillium wilt in the last fifty years in China. The topics discussed include main achievements, experiences, problems and countermeasures for solving.展开更多
Fusarium wilt (FW) is one of the most common cotton diseases in the world. Identification of QTLs conferring resistance to FW is key for the incorporation of resistance genes into elite cultivars. Two intraspecific ...Fusarium wilt (FW) is one of the most common cotton diseases in the world. Identification of QTLs conferring resistance to FW is key for the incorporation of resistance genes into elite cultivars. Two intraspecific (cross between Gossypium hirsuturn L.) and one interspecific (cross between Gossypium hirsutum L. and Gossypium bardence L.) F2 populations were constructed by using a highly resistant cultivar and crossing it to a susceptible cultivar with 154, 79, and 148 offsprings, respectively. Simple sequence repeats (SSR) were used to screen genomic regions closely linked to FW resistance. The results showed that five QTLs associated with FW resistance were detected in two intraspecific populations using a composite interval mapping method under four different conditions. Four of these loci located on Chr. 2/Chr. 17 neighboring markers JESPR304 or CIR305 which explained 13.1 to 45.9% of the phenotypic effect. Furthermore, JESPR304 and CIR305 were previously testified and found to be tightly linked. It is possible that these four QTLs detected under different conditions were the same resistance QTL/gene. We consider that there is the possibility of a major FW resistant gene in intraspecific populations. In the interspecific mapping populations two QTLs were detected on Chr. 9 and Chr. 12/26 which explained great phenotypic variance of 49.4 and 45.7%. As the location of QTLs for FW resistance among the intraspecific and the interspecfic populations were totally different, it is suggested that there may be different resistance mechanisms between G. bardence L. and G. hursutum L. Thus, the present research provides an opportunity to understand the genetic control of resistance to FW in Gossypium hirsutum and Gossypium bardence and to conduct MAS in breeding programs to develop FW resistant cultivars.展开更多
Both Fusarium and Verticillium wilts are important soil-borne diseases,which can not be effectively controlled by chemical fungicides.The two diseases,especially Verticillium wilt,have
The article presents the results of studies on the resistance of hybrid cotton lines to a new virulent isolate (strain) of the fungus <i><span style="font-family:Verdana;">Fusarium verticillioide...The article presents the results of studies on the resistance of hybrid cotton lines to a new virulent isolate (strain) of the fungus <i><span style="font-family:Verdana;">Fusarium verticillioides</span></i><span style="font-family:Verdana;"> upon inoculation of the host plant. Based on the studies, it was found that the complex genotypic resistance of the studied lines</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span></span></span></span></span><span><span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> when the host plants are inoculated with isolates of -100</span><i><span style="font-family:Verdana;"> V. dahliae</span></i></span></span></span></span></span></span></span><span><span><span><span><span><span><i><span style="font-family:;" "=""> </span></i></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">Kleb</span></i></span></span></span></span></span></span><span><span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> fungus and 103 </span><i><span style="font-family:Verdana;">Fusarium verticillioides</span></i><span style="font-family:Verdana;"> fungi</span></span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> depend</span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> on the degree of resistance of the parental forms and their combination ability.</span></span></span></span></span></span></span>展开更多
目的:为更有效防治棉花枯萎病和研制新型生物农药提供技术依据,本研究探究生防菌代谢产物与化学杀菌剂对棉花枯萎病菌(Fusarium oxysporum f. sp.vasinfectum)的抑制活性。方法:采用对峙培养法、菌丝生长速率法测定生防菌、发酵上清液...目的:为更有效防治棉花枯萎病和研制新型生物农药提供技术依据,本研究探究生防菌代谢产物与化学杀菌剂对棉花枯萎病菌(Fusarium oxysporum f. sp.vasinfectum)的抑制活性。方法:采用对峙培养法、菌丝生长速率法测定生防菌、发酵上清液、脂肽粗提物以及化学杀菌剂对棉花枯萎病菌的抑制特性。结果:对峙培养法得出生防菌SJ06对棉花枯萎病菌的抑制率为78.24%。发酵上清液的浓度从6.25μL/mL增至100.00μL/mL对病菌的抑制率从46.90%增至80.30%,其对病菌的EC50为7.37μL/mL;脂肽粗提物的质量浓度从673.96μg/mL增至8 120.00μg/mL对病菌的抑制率从19.90%增至77.30%,对病菌的EC50为2 720.20μg/mL。棉花枯萎病菌对多菌灵、戊唑醇的敏感性较高,戊唑醇和多菌灵对病菌的EC50分别为0.34、0.49μg/mL;其次分别为腈菌唑、苯醚甲环唑和丙环唑,其对病菌的EC50分别为1.07、1.34、1.54μg/mL,而丙森锌对病菌的抑制活性较差,EC50为63.25μg/mL。结论:解淀粉芽孢杆菌发酵代谢物和戊唑醇等麦角甾醇生物合成抑制剂对棉花枯萎病菌具有较好的抑制活性。展开更多
文摘This review summarizes the main advances in cotton breeding for resistance to fusarium and verticillium wilt in the last fifty years in China. The topics discussed include main achievements, experiences, problems and countermeasures for solving.
基金supported by the Key Project of Science and Technology in Xinjiang Uyghur Autonomy (200311101),China
文摘Fusarium wilt (FW) is one of the most common cotton diseases in the world. Identification of QTLs conferring resistance to FW is key for the incorporation of resistance genes into elite cultivars. Two intraspecific (cross between Gossypium hirsuturn L.) and one interspecific (cross between Gossypium hirsutum L. and Gossypium bardence L.) F2 populations were constructed by using a highly resistant cultivar and crossing it to a susceptible cultivar with 154, 79, and 148 offsprings, respectively. Simple sequence repeats (SSR) were used to screen genomic regions closely linked to FW resistance. The results showed that five QTLs associated with FW resistance were detected in two intraspecific populations using a composite interval mapping method under four different conditions. Four of these loci located on Chr. 2/Chr. 17 neighboring markers JESPR304 or CIR305 which explained 13.1 to 45.9% of the phenotypic effect. Furthermore, JESPR304 and CIR305 were previously testified and found to be tightly linked. It is possible that these four QTLs detected under different conditions were the same resistance QTL/gene. We consider that there is the possibility of a major FW resistant gene in intraspecific populations. In the interspecific mapping populations two QTLs were detected on Chr. 9 and Chr. 12/26 which explained great phenotypic variance of 49.4 and 45.7%. As the location of QTLs for FW resistance among the intraspecific and the interspecfic populations were totally different, it is suggested that there may be different resistance mechanisms between G. bardence L. and G. hursutum L. Thus, the present research provides an opportunity to understand the genetic control of resistance to FW in Gossypium hirsutum and Gossypium bardence and to conduct MAS in breeding programs to develop FW resistant cultivars.
文摘Both Fusarium and Verticillium wilts are important soil-borne diseases,which can not be effectively controlled by chemical fungicides.The two diseases,especially Verticillium wilt,have
文摘The article presents the results of studies on the resistance of hybrid cotton lines to a new virulent isolate (strain) of the fungus <i><span style="font-family:Verdana;">Fusarium verticillioides</span></i><span style="font-family:Verdana;"> upon inoculation of the host plant. Based on the studies, it was found that the complex genotypic resistance of the studied lines</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span></span></span></span></span><span><span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> when the host plants are inoculated with isolates of -100</span><i><span style="font-family:Verdana;"> V. dahliae</span></i></span></span></span></span></span></span></span><span><span><span><span><span><span><i><span style="font-family:;" "=""> </span></i></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">Kleb</span></i></span></span></span></span></span></span><span><span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> fungus and 103 </span><i><span style="font-family:Verdana;">Fusarium verticillioides</span></i><span style="font-family:Verdana;"> fungi</span></span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> depend</span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> on the degree of resistance of the parental forms and their combination ability.</span></span></span></span></span></span></span>