The objective of this study was to characterize yellow(stripe) rust resistance gene(s) in 52 commercial wheat cultivars from Yunnan Province in China,and to provide information for their rational deployment in field.S...The objective of this study was to characterize yellow(stripe) rust resistance gene(s) in 52 commercial wheat cultivars from Yunnan Province in China,and to provide information for their rational deployment in field.Seedlings of wheat cultivars were inoculated with 25 differential isolates of Puccinia striiformis from foreign and home to postulate resistance genes to yellow rust,and then validated by pedigree.There were 10 probable resistance genes characterized in these cultivars,in which,Yr9 was most commonly postulated to be present in thirteen cultivars.Yr21,the second,was present in four cultivars.Yr8,the third,were present in three cultivars.Yr6,Yr17 and Yr26,the fourth,was present in two cultivars respectively.The other gene(s) such as,Yr2+YrA,Yr7 and Yr27,were only present in single cultivar(s);unknown gene(s) or gene(s) combination(s) were present in 22 cultivars.One cultivar(Yunmai 42) had no resistance gene tested in this study.Cultivars such as Yunmai 52,Mian 1971-98,Kunmai 4,and Yunmai 56 carried effective genes and can be popularized mainly;Yr9 should be planted with other Yr genes.In the meantime other effective genes should be introduced to realize gene diversity for controlling wheat yellow rust.Yunmai 42 should be reduced to avoid rust breakout.Unknown gene cultivars should be utilized and be researched deeply.展开更多
Genetic diversity is the base of any genetic improvement breeding program aimed at stress breeding.The variability among breeding materials is of primary importance in the achievements of a good crop production.Herein...Genetic diversity is the base of any genetic improvement breeding program aimed at stress breeding.The variability among breeding materials is of primary importance in the achievements of a good crop production.Herein,105 wheat genotypes were screened against drought stress using factorial completely randomized design at seedling stage to determine the genetic diversity and traits association conferring drought tolerance.Analysis of variances revealed that all the studied parameters differed significantly among all genotypes,indicating the significance genetic variability existed among all genotypes for studied indices.The 10 best performance genotypes G1,G6,G11,G16,G21,G26,G39,G44,G51,and G61 were screened as drought tolerant,while five lowest performance genotypes G3,G77,G91,G98,and G105 were screened as drought susceptible.Root length,chlorophyll a,chlorophyll b,and carotenoid contents were significantly correlated among themselves which exhibited the importance of these indices for rainfed areas in future wheat breeding scheme.Shoot length exhibited non-significant and negative association with other studied traits,and its selection seems not to be a promising criteria for this germplasm for drought stress.Best performance genotypes under drought stress conditions will be useful in future wheat breeding program and early selection will be effective for developing high yielding and drought tolerant wheat varieties.展开更多
Objective: To evaluate the clinical effect of traditional Chinese spinal orthopedic manipulation(TCSOM) in treating patients with functional abdominal pain syndrome(FAPS) in comparison with Pinaverium Bromide(Dicetel,...Objective: To evaluate the clinical effect of traditional Chinese spinal orthopedic manipulation(TCSOM) in treating patients with functional abdominal pain syndrome(FAPS) in comparison with Pinaverium Bromide(Dicetel, PBD), and to assess a possible cause for FAPS. Methods: Eighty patients with FAPS were randomly and equally assigned to the TCSOM group and PBD group according to the random number table. All patients in the TCSOM group were treated with a maximum of 5 times of spinal manipulations. Patients in the PBD group were instructed to take 50 mg 3 times a day, consistently for 2 weeks. The symptoms of pre-and post-treatment were assessed on a visual analog scale(VAS) pain score. A symptom improvement rating(SIR) was implemented to evaluate the effects of the treatments. Results: The symptoms of 27 cases of the TCSOM group were relieved soon after the first TCSOM treatment and 9 cases were significantly improved. The VAS pain scores in the TCSOM group were significantly lower than those in the PBD group after 2 weeks treatment. According to the SIR based on VAS, the TCSOM group included 30 cases with excellent results, 7 cases with good, and 3 cases with poor. Adverse events to the treatment were not reported. Based on VAS, the PBD group reported 8 cases with excellent results, 10 cases with good and 22 cases with poor. There was a significant difference between the two groups(P<0.01). Conclusions: The displacement of intervertebral discs and/or vertebra in the thoracic or lumbar region seems to be a contributing factor in the symptoms of FAPS. TCSOM is an effective treatment for FAPS.展开更多
基金support by the Ministry of Science and Technology,China (2011CB100403)the Ministry of Agriculture,China (200903035)the Special Project from State Key Laboratory for Biology of Plant Diseases and Insect Pests,Chinese Academy of Agricltural Sciences (SKL2009OP09)
文摘The objective of this study was to characterize yellow(stripe) rust resistance gene(s) in 52 commercial wheat cultivars from Yunnan Province in China,and to provide information for their rational deployment in field.Seedlings of wheat cultivars were inoculated with 25 differential isolates of Puccinia striiformis from foreign and home to postulate resistance genes to yellow rust,and then validated by pedigree.There were 10 probable resistance genes characterized in these cultivars,in which,Yr9 was most commonly postulated to be present in thirteen cultivars.Yr21,the second,was present in four cultivars.Yr8,the third,were present in three cultivars.Yr6,Yr17 and Yr26,the fourth,was present in two cultivars respectively.The other gene(s) such as,Yr2+YrA,Yr7 and Yr27,were only present in single cultivar(s);unknown gene(s) or gene(s) combination(s) were present in 22 cultivars.One cultivar(Yunmai 42) had no resistance gene tested in this study.Cultivars such as Yunmai 52,Mian 1971-98,Kunmai 4,and Yunmai 56 carried effective genes and can be popularized mainly;Yr9 should be planted with other Yr genes.In the meantime other effective genes should be introduced to realize gene diversity for controlling wheat yellow rust.Yunmai 42 should be reduced to avoid rust breakout.Unknown gene cultivars should be utilized and be researched deeply.
基金the National Key R&D Program of China (2018YFD0200500) for the financial support
文摘Genetic diversity is the base of any genetic improvement breeding program aimed at stress breeding.The variability among breeding materials is of primary importance in the achievements of a good crop production.Herein,105 wheat genotypes were screened against drought stress using factorial completely randomized design at seedling stage to determine the genetic diversity and traits association conferring drought tolerance.Analysis of variances revealed that all the studied parameters differed significantly among all genotypes,indicating the significance genetic variability existed among all genotypes for studied indices.The 10 best performance genotypes G1,G6,G11,G16,G21,G26,G39,G44,G51,and G61 were screened as drought tolerant,while five lowest performance genotypes G3,G77,G91,G98,and G105 were screened as drought susceptible.Root length,chlorophyll a,chlorophyll b,and carotenoid contents were significantly correlated among themselves which exhibited the importance of these indices for rainfed areas in future wheat breeding scheme.Shoot length exhibited non-significant and negative association with other studied traits,and its selection seems not to be a promising criteria for this germplasm for drought stress.Best performance genotypes under drought stress conditions will be useful in future wheat breeding program and early selection will be effective for developing high yielding and drought tolerant wheat varieties.
基金Supported by the Scientific and Technologic Project of Jiangsu Administration of Traditional Chinese Medicine(No.LZ09085,LZ13243)
文摘Objective: To evaluate the clinical effect of traditional Chinese spinal orthopedic manipulation(TCSOM) in treating patients with functional abdominal pain syndrome(FAPS) in comparison with Pinaverium Bromide(Dicetel, PBD), and to assess a possible cause for FAPS. Methods: Eighty patients with FAPS were randomly and equally assigned to the TCSOM group and PBD group according to the random number table. All patients in the TCSOM group were treated with a maximum of 5 times of spinal manipulations. Patients in the PBD group were instructed to take 50 mg 3 times a day, consistently for 2 weeks. The symptoms of pre-and post-treatment were assessed on a visual analog scale(VAS) pain score. A symptom improvement rating(SIR) was implemented to evaluate the effects of the treatments. Results: The symptoms of 27 cases of the TCSOM group were relieved soon after the first TCSOM treatment and 9 cases were significantly improved. The VAS pain scores in the TCSOM group were significantly lower than those in the PBD group after 2 weeks treatment. According to the SIR based on VAS, the TCSOM group included 30 cases with excellent results, 7 cases with good, and 3 cases with poor. Adverse events to the treatment were not reported. Based on VAS, the PBD group reported 8 cases with excellent results, 10 cases with good and 22 cases with poor. There was a significant difference between the two groups(P<0.01). Conclusions: The displacement of intervertebral discs and/or vertebra in the thoracic or lumbar region seems to be a contributing factor in the symptoms of FAPS. TCSOM is an effective treatment for FAPS.
