马铃薯新品种—秦芋32号选育     

蒲正斌  张百忍  王长科  张昌兵  周长武  郑敏* 《中国马铃薯》2012,(4):255-256

秦芋32号(原代号:康0102-5)是2000年以秦芋30号作母本,89-1优系作父本,有性杂交获得实生种子,经育种圃、鉴定圃选育而成。2011年3月申报国家农作物品种审定委员会待审,2011年10月通过审定。2007～2009年参加国家级马铃薯品种中晚熟西南组繁种及区域试验;2010年国家西南组生产试验平均产量1 443 kg/667 m2,比对照米拉增产12.5%。块茎干物质含量18.5%、淀粉含量11.8%,Vc含量14.2 mg/100 g,还原糖含量0.29%,粗蛋白含量2.1%。抗病性接种鉴定:中抗PVX和PVY,抗晚疫病。  相似文献   

茶园滴灌施肥的增产提质及土壤养分效应研究   总被引：2，自引：0，他引：2  

唐颢  吴家尧  黎健龙  吴利荣  唐劲驰* 《茶叶科学》2013,(1):85-90

以常规施肥作为对照,设计3个不同氮素用量(450、300、150 kg/hm2),研究了茶园滴灌施肥对茶叶产量、品质及土壤养分性状的影响。结果表明,滴灌施肥处理比对照增产3.4%～9.3%,施氮量与产量间呈明显正相关,以年施氮量300～450 kg/hm2产量较高,滴灌施肥对茶叶品质影响不显著。滴灌施肥处理成熟叶含氮量显著高于对照,且季节性差异明显,秋茶﹥夏茶﹥春茶,滴灌施肥可促进茶树对氮素的吸收利用。施肥方式对土壤pH值影响显著,滴灌施肥处理土壤pH值明显高于对照,可能因其氮素利用率较高而有助于减弱无机氮对土壤的酸化作用。  相似文献   

甜瓜种质资源分类方法发展状况   总被引：5，自引：1，他引：4  

刘珊珊  秦智伟 《北方园艺》2000,(4):15-16

甜瓜是葫芦科中高度多型性的大种群,近200年来,有关甜瓜分类的论述甚多.传统的甜瓜分类学是以外部形态和地理分布这两种方法为基础的,具有直观、简便的优点,但同时也是分类学上主观性产生的主要原因之一.  相似文献   

甜瓜采后生理和贮藏保鲜研究进展   总被引：23，自引：1，他引：22  

陈雷  秦智伟 《北方园艺》1999,(6):24-27

本从采后甜瓜果实的物质变化规律入手,分析了影响甜瓜耐贮运性的因素,总结了国内外近年来所采用的各种贮藏保鲜技术,并进一步分析了我国在甜瓜贮藏保鲜方面存在的问题及相应解决方法,认为只有掌握了甜瓜果实成熟和衰老机理的基础上应用先进的贮藏保鲜技术才是最有效的方法。  相似文献   

Improvement of Appearance Traits of elite Rice Zhenshan 97B by Molecular Introgression of Targeted about 800 kb Interval from Indica Rice Jiafuzhan Genome     

X.J. Fang * L.R. Jiang Hainan Institute of Tropical Agricultural Resources  Sanya    China  Life College  Xiamen University  Xiamen  Fujian  China. 《分子植物育种》2007,5(2):209-210

Rice appearance trait is mainly mean grain length (GL), grain width (GW), ratio of length and width (L/W), chalkiness (CH) and transparence (TR). Appearance is the first impression, and rice appearance traits effect significantly the value of commodity. Hybrid rice is relatively low quality, especially on rice appearance quality,which restricts partially its extend and badly export of hybrid seed and rice in China.Shanyou 63, the most famous hybrid rice combination of China, could not be also sustainable application because of its poor qualities. In this studies, We attempt to improve appearance quality of the elite rice maintainer of Zhenshan 97B by using molecular approach of genomic interval targeted introgression. Three F2 populations were constructed to study the classical and molecular genetic of rice appearance traits, at the same time, molecular marker-asisted toimprove the main maintainer line, Zhenshan 97B were performed. There some following results:Three F2 populations were constructed based on crosses of Guangluai 4×Jiafuzhan (GJ popu.), Minghui 86×Jiafuzhan (MJ popu.) and Zhenshan 97B×Jiafuzhan (ZJ popu.). ZJ popu and GJ popu were produced to reconstruct the linkage maps related with rice appearance traits based on BSA, and detect QTL of target traits based on IM.In ZJ popu, 9 QTLs of target traits were detected. The interval, RM169～RM516 on Chromosome 5, was genetic locus of GW, L/W, CH and BW, and the explained variances were 10.9%, 14.9%, 12.0% and 14.2%, respectively.RM214 on chromosome 7, RM339 on chromosome 8 were genetic loci if CH and BW, and the explained variances were 9.4%, 10.0%, 11.0% and 12.1%. besides there is a genetic locus, RM347, of G/W on chromosome 3, and the explained varance was 10.3%. In GJ popu, 5 QTLs of rice appearance traits were detected. The interval, RM169-RM516 on Chromosome 5, were also the genetic loci of GW, CH and BW, and the explained variances were 9.0%, 12.5%, and 13.6%, respectively. RM264～RM80 on chromosome 8 was the genetic loci of GW amd L/W,and the explained variances were 14.7% and 13.4%. The genotypes of all QTLs, except RM214, from Jiafuzhan contributed to improving riee appearance traits.The research was to improve the rice appearance quality of Zhenshan 97B by introgressing QTLs of rice appearance traits from Jiafuzhan, a donor parent, by means of MAS in the process of recurrent backcrossing, 4 SSR markers were used to detect the target genotypes from donor parent, and 70 SSR primers to identify the genetic background of recurrent parent. Consequently, there were 19 target individuals in BC3, in which the mean value of GL, GW, L/W, CH and BW were 6.06±0.04mm, 2.50±0.02mm, 2.43±0.02, 29.5±2.7 and 29.4±2.7%, respectively,and the mean homologous degree (HD) to recurrent parent is up to 98.22%. Compared to Zhenshan 97B, GL, CH and BW decreased 0.17 mm, 34.9% and 34.5% respectively and however L/W increased 0.19. which accounted separately for 25.37%, 54.79%, 54.57% and 10.50% of thedifference of every trait between two parents. It is very luckly to find a individual, 13BC2-3BC3 line, whose GL, GW, G/W, CH and BW were 6.04 mm, 2.43 mm, 2.49,2.5% and 2.5% separately, There is very important signification for it to be used in hybrid rice breeding improving appearance traits. In the research, MAS efficiency of 3 loci (with 4 markers ) was 5.68% and coincident degree was 73.08%.  相似文献   

蔬菜农药残留研究进展   总被引：15，自引：2，他引：15  

吴鹏  秦智伟  周秀艳  武涛  辛明 《东北农业大学学报》2011,42(1):138-144

蔬菜农药残留问题已是政府、市场和消费者都非常关注的热点问题.近些年,农残的检测技术与防治方法虽然取得了较快的发展,但从生物学、遗传学和育种的角度探索农药残留的发生机理,从生物体自身特性解决农药残留问题的研究领域还是空白.文章综述了蔬菜农药残留的研究现状、检测技术、发生机理及防治方法,提出利用分子生物学理论与技术挖掘生物...  相似文献   

日本蔬菜生产、消费及科研概况     

秦智伟  曲英华 《北方园艺》1986,(3)

一、概况日本近十几年,依靠蔬菜品种改良、新品种、新栽培类型及各种生产资料的开发,在蔬菜栽培管理技术方面得到了迅速地改善和提高。现在主要蔬菜已基本达到了周年生产周年供应。到1985年全日本指定蔬菜生产地约为1,200个,生产总额达22亿日元,占全日本农业生产总额的19.9％。  相似文献   

黄瓜耐弱光性鉴定指标研究及其苗期与成株期的相关分析     

王海涛  秦智伟  李丹丹  周秀艳  辛明 《中国蔬菜》2016,1(8):35-39

以4份黄瓜品系为试验材料,通过测定不同弱光处理下叶片叶绿素含量随时间变化的情况,探索黄瓜苗期耐弱光性鉴定的最适宜光照强度与最佳鉴定时期,同时对黄瓜苗期耐弱光性进行鉴定,并对黄瓜苗期的叶片叶绿素含量降低率与成株期的产量降低率、植株干质量降低率进行相关性分析,探究黄瓜苗期与成株期耐弱光性的相关性。结果表明:20mol·m~(-2)·s~(-1)弱光胁迫20d的幼苗叶片叶绿素含量降低率可以作为黄瓜苗期耐弱光筛选的快速鉴定指标。成株期产量的降低率与植株干质量的降低率均能反映成株期品种间耐弱光性的差异。苗期叶片叶绿素含量降低率与成株期的产量降低率呈显著正相关,不同品种在苗期和成株期的耐弱光性表现一致。W_(25)的耐弱光性较强,W_5的耐弱光性较差。  相似文献   

黄瓜主要种质资源耐旱性评价     

李阳  秦智伟  周秀艳  辛明 《北方园艺》2016,(20):5-8

以16个主要黄瓜品种为试材,通过设定正常水分处理和干旱处理(正常水量的50%)的方法,研究了干旱对黄瓜成株期植株的形态、生理生化指标的影响,以期筛选出黄瓜耐旱性鉴定指标,为抗旱黄瓜品种的选育提供依据。结果表明:干旱处理对不同生态类型黄瓜的根干质量、地上部干质量、株高、丙二醛含量、净光合速率、蒸腾速率、气孔导度及叶面积有显著影响,应用隶属函数值法对黄瓜抗旱性进行分析,得出根干质量是与耐旱性相关性最大的指标,并通过逐步回归建立总隶属函数值与根干质量的最优回归方程Y=0.575+0.417X,用此方程对供试材料进行预测,预测值与总隶属函数值基本一致。  相似文献   

黄瓜低农药残留品种的外果皮组织解剖学特
征比较分析     

赵文  秦智伟  吴鹏  周秀艳 《中国蔬菜》2013,1(20):32-38

以黄瓜低农药残留品系D0351 及其相对应的高农药残留品系D9320 作为材料，在始收期分
别喷施霜霉威和毒死蜱两种农药，对两个品系外果皮细胞的形态、气孔、叶绿体以及线粒体超微结构进行
比较分析。结果表明：在自然状态下，两个品系的最大差异是外果皮细胞结构，D0351 品系外果皮细胞呈
长条形，D9320 品系呈近正方形，D0351 品系的外表皮细胞面积小于D9320 品系。两个品系经农药处理后，
D0351 外果皮细胞变成近圆形或长圆形，D9320 外果皮细胞形态没有改变，两个品系的外果皮细胞面积都
增加，且D0351 的细胞面积仍小于D9320；气孔开口度D0351 的增大程度比D9320 小；两个品系的叶绿
体内的嗜锇颗粒数量变多、体积变大；线粒体形态及内部结构没有改变。  相似文献