拉枝角度对‘SH1’矮化中间砧‘富士’苹果幼树生长和结果的影响   总被引：1，自引：0，他引：1  

蔡华成  王芸芸  杨廷桢  王骞  高敬东  李春燕  杜学梅  弓桂花 《中国农学通报》2017,33(10):78-82

旨在为‘SH1’矮砧‘富士’提供幼树树形管理的科学依据。本研究以4年生‘SH1’矮砧‘富士’为试材,通过70°、90°、120°3种拉枝角度的处理,探讨不同拉枝角度对苹果幼树生长和结果的影响。结果表明:拉枝角度120°时叶片光合速率最大,且与其他2个处理差异显著(P0.05);拉枝角度90°时叶绿素a、叶绿素b和总叶绿素含量最高、叶片厚度、百叶重最大,与其他2个处理差异显著(P0.05);拉枝角度90°时的冠下光合间接辐射最大,拉枝角度120°时株间光合间接辐射、光合直接辐射和叶面积指数均最大;拉枝角度90°时长枝的长度、粗度最大,中枝粗度最大,拉枝角度120°时中枝长度最长;拉枝角度90°时果实单果重、果形指数、可溶性固形物含量、硬度均最大。综合考虑树体生长势和果实品质等因素,90°为‘SH1’矮砧‘富士’枝条适宜的拉枝角度。  相似文献   

Antioxidant,anti-amylase and anti-glycation potential of brans of some Sri Lankan traditional and improved rice (Oryza sativa L.) varieties     

《Journal of Cereal Science》2014,59(3):451-456

Brans of 23 traditional and 12 improved (both red and white) rice varieties in Sri Lanka were screened for anti-amylase and anti-glycation activities in vitro. Varieties which showed the highest inhibitory activities at screening were further investigated for anti-glucosidase and glycation reversing as anti-diabetic properties. The same varieties were studied for selected antioxidant properties. Significantly high anti-amylase and anti-glycation activities were observed for bran extracts of red varieties compared to white varieties at screening. Traditional red rice varieties, Masuran, Sudu Heeneti, Dik Wee and Goda Heeneti, exhibited significant and dose dependent anti-amylase, anti-glycation and glycation reversing activities. These varieties also showed marked antioxidant properties. It is concluded that brans of Sri Lankan traditional red rice varieties Masuran, Sudu Heeneti, Dik Wee and Goda Heeneti may be potential food supplements for diabetes.  相似文献   

农抗SH—62产生菌原生质体再生菌株的筛选和再生菌株R-4发酵规律的初步研究     

周向东  梁蓉芳 《华中农业大学学报》1986,(4)

本文报道了农抗SH—62产生菌原生质体再生菌株的筛选和再生菌株R—4的发酵规律。试验表明,通过摇瓶的初筛和复筛,从活性比出发菌株要强的202株再生菌株中,找出R—4、R—66和R—72三株活性最强而又稳定的再生菌株。在再生菌株R—4的发酵试验中,选出了该菌株的最佳发酵培养基为1号培养基,并证明这个菌株对溶氧量并不敏感,在偏碱条件下有利于生长和产素,发酵周期为72小时等最适发酵条件。  相似文献   

基于JBPM的公文流转系统的设计与实现     

田伟 《山东饲料》2010,(9)

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SH9在线高速膨胀系统进料含水率对烟丝综合质量的影响     

王智奇  谷超林  狄晓亚  梁勋 《安徽农业科学》2014,(28):9928-9929

[目的]研究SH9进料含水率对干燥后烟丝综合质量的影响.[方法]研究了SH9在线高速膨胀系统对烟丝进行干燥时不同进料含水率条件下烟丝综合质量变化情况.[结果]研究显示,不同的进料含水率对烟丝、填充值以及感官质量均有较显著影响,对整丝率、碎丝率影响不显著.[结论]研究可为卷烟企业在用SH9在线高速膨胀系统对烟草加工时选择合适的控制参数提供依据.  相似文献   

Hsa-miR-218 inhibits growth of cervical cancer HeLa cells by targeting to LASP1     

QIU Yu  HUANG Jian-ping  ZHOU Qin-xian  WANG Huan  SHI Hui-gang  HE Jin-hua 《园艺学报》2015,31(9):1572-1577

AIM: To study the effect of hsa-miR-218 on cervical cancer HeLa cell growth and the underlying molecular mechanism.METHODS: The lentivirus expression vector pmiR-218 targeting to hsa-miR-218 was constructed. pmiR-218 was transfected into HeLa cells. The number of viable HeLa cells was counted by the method of Trypan blue exclusion. The inhibitory rate of cell activity was detected by WST-8 assay. The expression of LIM and SH3 protein 1(LASP1) at mRNA and protein levels was determined by real-time PCR and Western blot. The interaction between miR-218 and LASP1 was examined using a luciferase reporter assay.RESULTS: The lentivirus expression vector pmiR-218 targeting to hsa-miR-218 was constructed successfully and confirmed by DNA sequencing. Over-expression of miR-218 inhibited the activity of HeLa cells with the inhibitory rates of 15%, 26% and 65% at 24 h, 48 h and 72 h, respectively. The difference between transfection group and blank control/negative control group was statistically significant. The luciferase activity was reduced when co-transfection with miR-218 mimics and LASP1-3,UTR plasmid. The relative expression of miR-218 was increased after transfection with pmiR-218. Over-expression of miR-218 down-regulated the LASP1 expression at mRNA and protein levels by 25% and 75% respectively. Compared with blank control group and negative control group, the difference was statistically significant(P<0.05).CONCLUSION: pmiR-218 effectively inhibits the growth of HeLa cells in a time-dependent manner. miR-218 targets to the 3,UTR of LASP1, thus down-regulating the expression of LASP1 in HeLa cells.  相似文献   

家庭农场信息管理系统的设计与实现     

王鲁  孙志强  宋超  朱红梅  申翔翔 《安徽农业科学》2015,(2):365-367,370

发展家庭农场是提高农业集约化经营水平的重要途径.家庭农场信息化为更好地实现科学种植、科学管理提供了数据支持和技术保障.该研究基于对章丘盛泉家庭农场的调研分析,设计并开发了家庭农场信息管理系统,该系统满足了对当前家庭农场土地、种植养殖记录、生产资料、农产品、操作人员等的信息化管理需求,提升了家庭农场生产及管理的整体水平.  相似文献   

Agronomic Variability in Selected Triticum turgidum x T. tauschii Synthetic Hexaploid Wheats     

R. L. Villareal    A. Mujeeb-Kazi  E. Del  Toro  J. Crossa  S. Rajaram 《Journal of Agronomy and Crop Science》1994,173(5):307-317

Two trials were conducted at the Mexican National Institute of Agricultural Research Experiment Station at Yaqui Valley, Sonora, Mexico to investigate the nature and extent of agronomic variation in 50 synthetic hexaploid (SH) wheats (2n = 6x = 42, AABBDD) derived from Triticum turgidum (2n = 4x = 28. AABB) × T. tauschii (In = 2x = 14, DD) crosses for subsequent use in wheat improvement. Plant height, spike length, days to flowering, physiological maturity, grain yield, above-ground biomass at maturity, harvest index, yield components and test weight were determined.
Significant agronomic variation was observed among the germplasm evaluated. Outstanding SH genotypes were identified with higher grain yield, above-ground biomass at maturity, 1000-grain weight, and spikes m⁻² than the bread wheat ( Triticum aestivum L.) check cultivar Seri 82. Genotypic correlations of grain yield with other character traits show that grain m² was the most important determinant of gram yield (r = 0.993). Data on agronomic traits subjected to complete linkage cluster analysis resulted in classifying the genotypes into two distinct phenotypic groups excluding Seri 82. Groups generally corresponded to durum progenitors of the SH with significant group differences for all characters. This demonstrates use of practical numerical analysis procedures to describe agronomic variation in representative SH genotypes. Clustering by quantitativy traits may be valuable for identification of genotypes with divergent sources for breeding and agronomic purposes.  相似文献   

鸡SH3RF2插入/缺失等位基因在中国地方鸡种中频率分布研究     

赵妤娟  张代喜  陈余  贾亚雄  曲鲁江 《中国家禽》2012,34(6):33-36

中国地方鸡种资源丰富,风味较优,但存在生长速度慢、饲料效率低等缺点,因此为了加速我国地方鸡种和肉鸡品种的遗传改良,分子标记技术得到了广泛应用。已知SH3RF2基因的插入/缺失突变与肉鸡生长和体重密切相关,因此本试验对分布在我国各地的15个地方鸡品种进行了SH3RF2基因的等位基因频率检测,以确定SH3RF2基因在我国地方鸡种中的等位基因分布情况,继而将SH3RF2基因用于鸡生长性状的选择的分子育种标记。研究结果发现所检测地方鸡种和肉鸡品种均是非缺失的纯合子,没有发现缺失的等位基因。要利用SH3RF2基因对中国地方鸡种进行选择,可能需要通过杂交等手段将缺失型等位基因导入我国地方鸡种的群体之中。  相似文献   

SH系矮化中间砧对‘富士’苹果树体生长、产量和果实品质的影响   总被引：2，自引：0，他引：2  

李民吉  张强  李兴亮  周贝贝  杨雨璋  周佳  张军科  魏钦平 《园艺学报》2018,45(10):1999-2007

2009年春季定植不同类型SH系矮化中间砧(SH1、SH3、SH6、SH9和SH40)苹果苗(宫藤富士/SH系砧木/平邑甜茶),株行距为1.5 m×5.0 m,纺锤形整形修剪,常规管理。2016年调查树体生长、冠层光照分布和果实产量品质的差异,为苹果矮化砧木的筛选利用提供参考。研究结果表明,栽植第8年(2016年),各中间砧嫁接树体的砧穗干周比无显著差异;SH1和SH6中间砧嫁接的树体最矮,SH40最高且冠幅最大;树体干周直径由高到低依次为:SH40、SH3、SH9、SH6和SH1;各中间砧嫁接树体总枝量均超过140万条·hm~(-2);SH6嫁接树体短枝比例最高,树势中庸;SH3和SH9短枝比例最低。各中间砧嫁接树体冠层平均相对光照强度由高到低依次为SH3(72.88%)、SH6(70.85%)、SH9(65.51%)、SH1(62.23%)和SH40(61.82%),SH6嫁接树体相对光照强度小于30%和40%的区域最小,仅为2.08%和4.17%。比较各中间砧树体连续稳产4年的结果情况,SH6嫁接树体4年(2013—2016年)累计产量最高且稳产性最好,SH1产量较低,SH9稳产性较差。各中间砧嫁接树平均单果质量由高到低依次为SH40 SH6 SH9 SH3 SH1。不同中间砧嫁接树果实不同类型糖含量和比例存在显著差异;而总酸含量、不同类型酸的含量(除草酸外)和比例差异不显著;SH6嫁接树果实糖酸比显著高于SH1、SH3和SH9。综合树体的生长和结果能力,SH6为中间砧嫁接‘富士’表现较好。  相似文献