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湘农棉1号是利用高产优质棉花品种P115株系材料为母本,抗枯萎病耐黄萎病棉花品种P48为父本杂交配组育成的杂交棉花新组合.该品种产量高、抗性好,2009年2月通过湖南省农作物品种审定委员会审定,适合长江中下游流域棉区种植. 相似文献
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浅谈南疆棉区的引种方向 总被引:1,自引:0,他引:1
南疆是我国有前途的棉花生产基地,为尽快发挥该区的棉花生产优势,必须在加强本区棉花育种工作的同时,从国外引进优良品种,经过试验和鉴定从中选出适合本地种植的品种,或利用某些优良性状作为育种的 相似文献
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印度尼西亚土壤肥沃,气候温和,非常适宜棉花生产。但由于育种技术落后,棉花品种更新缓慢;加上种植技术落后,导致种植棉花的产出投入比低,农民种植棉花积极性低下,棉花种植面积逐年下降,棉花进口量逐年上升。印度尼西亚南苏省与湖北省是经国务院批准的对口友好合作省,其有9个区至少2万公顷面积适合发展棉花生产。为了鼓励和支持棉花种植,当地省政府2003年10月派出专题考察组,对湖北棉区进行了为期5天的专题考察。2004年从湖北省种子集团公司引进7个杂交棉品种进行试种。1试验方法试验于2004年1-9月在印度尼西亚南苏省的Takalar,Jeneponto,B… 相似文献
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推广种植优质高产棉花品种是提升棉花品质、促进棉农提质增效和提高当地棉花竞争力的有效途径.为了鉴定评价适合在伽师县推广利用的优质稳产棉花新品种,2020年利用中国农业科学院棉花研究所分子育种课题选育的3个优质棉品种(中棉所101、中棉所114、中棉所127)在伽师县开展试种与示范试验.结果 表明:3个参试材料的产量均比对照新陆早42号增产,增幅为5.9% ~29.5%;以中棉所127表现最好,其单铃重5.5g,衣分43.7%,籽棉产量5584.5 kg/hm2,纤维上半部平均长度33.5 mm,断裂强度37.8 eN/tex,马克隆值4.6.中棉所127的品质表现最为突出,达到高品质棉花标准,且产量比较稳定,适合在伽师县推广种植. 相似文献
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筛选出适合新疆巴州地区种植的优质早熟棉品种,为棉花供给侧结构性改革和国家区域性棉花良种繁育基地提供品种保障.比较了11个早熟棉花品种在巴州地区种植的生育期、农艺性状、产量、纤维品质等表现,并采用灰色关联度法对品种的籽棉产量、衣分、纤维上半部平均长度、断裂比强度、马克隆值、整齐度指数和伸长率共7个性状指标进行综合评价.结果 表明,11个优质早熟棉品种的综合排序为新陆早51号>新陆早33号>新陆早68号>新陆早61号>新陆早27号>新陆早18号>新陆早26号>新陆早42号>新陆早50号>新陆早70号>新陆早40号.因而推荐新陆早51号作为新疆巴州地区棉花良种繁育保障性品种. 相似文献
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蒜棉两熟制棉花轻简化生产的途径——短季棉蒜后直播 总被引:3,自引:0,他引:3
蒜棉套种是当前鲁西南棉区普遍采用的高效种植模式,但费工费时,也不适合机械化生产。改蒜棉套种为蒜后直播、改棉花中早熟品种为短季棉品种、改稀植大棵为密植矮化的棉蒜两熟种植模式,在保证棉蒜产量不减的情况下,减少了作业环节和次数,大大减少了用工,提高了机械化程度,实现了农机与农艺的有机融合,是鲁西南蒜棉两制条件下棉花轻简化生产的重要途径。 相似文献
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Systemic and asymptomatic Neotyphodium fungal endophytes infect numerous species of the Poaceae. The frequencies of Neotyphodium endophyte infection in Finland were investigated among and within seven Nordic cultivars of meadow fescue, Schedonorus pratensis (Huds.) P. Beauv., which is a widely grown pasture and forage grass species in Scandinavia. The cultivars were Kasper, Salten, Antti, Fure, Ilmari, Inkeri and Kalevi. Frequencies of infection of cultivars varied from endophyte-free cultivar Fure to highly infected cultivar Inkeri [mean (standard deviation of mean) of 0·95 (0·023)]. Mean frequencies of infection of three cultivars remained lower than 0·10, and two of the cultivars, Kasper and Salten, were intermediately infected. In most of the cultivars, frequencies of infection varied only slightly among seed lots. In cultivar Kasper, however, the frequency of endophyte infection was highly variable (0–0·96) among the 45 seed lots examined. The relative importance of cultivar, seed lot and infection by Neotyphodium endophyte to the aphid Rhopalosiphum padi L. was studied experimentally, using both endophyte-free and endophyte-infected plants of four seed lots of the two intermediately infected cultivars. Endophyte infection increased plant resistance to R. padi , overriding the influences of seed lot and cultivar. It is proposed that variation caused by endophyte infections in cultivars of meadow fescue should be taken into account in assessing plant breeding programmes in Europe. 相似文献
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Quynh-Hoa Pham Xuan-An Tran Thi-Nha-Trang Nguyen Thi-Thuy-Anh Tran Hai-Yen Hoang Thi-Hong-Van Nguyen Thi-Hanh Tang Thi-Phuc Do 《水稻科学》2016,23(6):334
Rice(Oryza sativa) is sensitive to salinity, but the salt tolerance level differs among cultivars, which might result from natural variations in the genes that are responsible for salt tolerance. High-affinity potassium transporter(HKTs) has been proven to be involved in salt tolerance in plants. Therefore, we screened for natural nucleotide polymorphism in the coding sequence of Os HKT1, which encodes the HKT protein in eight Vietnamese rice cultivars differing in salt tolerance level. In total, seven nucleotide substitutions in coding sequence of Os HKT1 were found, including two non-synonymous and five synonymous substitutions. Further analysis revealed that these two non-synonymous nucleotide substitutions(G50T and T1209A) caused changes in amino acids(Gly17Val and Asp403Glu) at signal peptide and the loop of the sixth transmembrane domain, respectively. To assess the potential effect of these substitutions on the protein function, the 3D structure of HKT protein variants was modelled by using PHYRE2 webserver. The results showed that no difference was observed when compared those predicted 3D structure of HKT protein variants with each other. In addition, the codon bias of synonymous substitutions cannot clearly show correlation with salt tolerance level. It might be interesting to further investigate the functional roles of detected non-synonymous substitutions as it might correlate to salt tolerance in rice. 相似文献
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试验以5个生产用马铃薯品种脱毒试管苗为材料,采用组织培养的方法,初步研究了茎切段在正常磷及低磷培养基中生长30 d时幼苗的磷营养效率差异,为筛选出适宜于生产用的磷高效马铃薯品种奠定了基础。试验结果表明,5个马铃薯品种幼苗在正常磷和低磷胁迫下对磷素的吸收和利用能力均存在明显的基因型差异。利用各品种幼苗的磷效率指标(植株干重、鲜重、吸磷量、磷利用效率)的相对指标(低磷处理的结果/正常磷处理的结果×100)进行聚类分析(类平均法)的结果表明,大白和I-1035属于磷高效基因型品种,中农Ⅷ是磷低效基因型品种,凉薯97和疫不加则属于中间类型品种。 相似文献
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为科学地制定除草体系,在比较详尽地查实历史资料的基础上,将本县80a来的稻田除草方法划分为5个除草阶段,阐述了每个阶段的除草特点和除草效果,提出了今后稻田化学除草的发展方向。 相似文献