共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
3.
不同小麦品种种子萌发期耐盐性的研究 总被引:1,自引:0,他引:1
以矮早781、百农3236、矮抗58和温麦8号4个小麦品种为材料,在盐度为0.15%的砂土中进行种子发芽耐盐性试验,测其发芽率、发芽指数、活力指数、幼苗苗长和淀粉酶含量,比较这些指标间的差异显著性,评价不同品种耐盐性的差别。结果表明:在小麦种子萌发期,百农3236耐盐性最好,矮早781次之,温麦8号和矮抗58号耐盐性相对较差。 相似文献
4.
玉米是三都县主要粮食作物,稳步推进玉米新品种推广,加速品种更新换代,对保障当地粮食安全具有重要意义。为筛选适宜三都种植且适应性较强、产量高、品质优的玉米品种提供依据,于2021年在三都县大河镇进行谷大781、正大782、正大783、正大822、桂单162(对照)的生产试验,比较各品种的生育期、植株性状、抗性和产量。结果表明:参试各玉米品种的生育期为112~113 d,株高在256~270 cm,以谷大781最高;穗位高在95~126 cm,正大783最高;株型均为平展型,持绿性较好。各品种均表现抗倒伏抗倒折,同时对几种玉米常见病均表现高抗,以谷大781和正大822的抗性表现较好。正大782、正大783、谷大781、正大822均比对照增产5%以上,以正大782最高。综合比较,正大782、正大783、谷大781共3个品种具有较大的推广潜力,可进一步试验选出适宜三都等亚热带地区种植的品种。 相似文献
5.
6.
海南水鹿是我国水鹿中的海南亚种,仅分布于海南,是海南稀有的遗传资源。据调查,海南水鹿现存量约781只。其中,全省驯养水鹿母鹿存栏144只,公鹿78只,野生水鹿存栏约559只。根据驯养鹿场情况的调查,海南水鹿主要饲养管理技术要点如下: 相似文献
7.
小麦新品种豫麦18号的选育 总被引:1,自引:0,他引:1
<正> 一、选育过程小麦新品种豫麦18号(矮早781),系偃师县二里头村科研站于1978年用郑州761作母本,偃师4号作父本进行有性杂交,经连年选育而成。1982年第四代出圃,系圃号为78(1)—0—1—8—1,代号为矮早781。 相似文献
8.
9.
10.
11.
漯麦4号系河南省漯河农科所从河南安阳农科所于1991年引进的穿梭组合选育而成。父本为矮早781,母本为80(6)-3—3—10。2003年11月通过国家农作物品种审定委员会审定。 相似文献
12.
为解决《农业部781号公告-6-2006鸡蛋中氟喹诺酮类药物残留量的测定高效液相色谱法》中回收率低的问题,采用磷酸盐提取液提取,正己烷脱脂,优化振荡方式、提取体积、脱脂方式及流动相洗脱比例,优化鸡蛋中氟喹诺酮类药物残留的检测方法。结果表明:采用0.05摩尔/升的磷酸-三乙胺溶液∶乙腈=84∶16流动相进行等度洗脱,响应最佳;采用磷酸盐提取液20毫升、涡旋振荡混合器进行振荡、移液管吸出备用液、流动性洗脱比例为70∶30时的回收效果最佳,诺氟沙星、环丙沙星、恩诺沙星的回收率分别高达85.6%、89.6%、97.6%,满足"农业部781号公告-6-2006"鸡蛋中氟喹诺酮类药物残留的检测分析要求。 相似文献
13.
14.
15.
2008年广西桂中北稻作区晚稻中熟组区域试验报告 总被引:2,自引:1,他引:2
以中优838为对照,共12个水稻品种参加了2008年广西桂中北稻作区晚稻中熟组区域试验。结果表明,多数参试品种的熟期适中,平均产量介于6834.2-7580.7kg/ha之间,其中4050A/R629、佳优1972和连优3189三个品种的产量、米质、抗性等性状优于对照,可在桂中北稻作区作晚稻种植,推荐省级评审;惠优6601、中研优600、天丰优1251、天丰优907、天丰优781、乐丰优781按试验程序继续参加2009年的区域试验及生产试验;三优02、丰源A/CA20、华优354因产量、米质、抗性等综合评价比对照差,终止试验。 相似文献
16.
张萍 《农村实用科技信息》2008,(7)
随着科学技术的发展,我国70年代初开始人工栽培食用菌,到1978年全国产量只有5万多吨,80年代进入了发展阶段,1990年突破100万吨,到2001年达到781万吨,产值达314亿元,而且每年都是以30~40%的速度增长。我国是世界食用菌生产大国和出口大国。黑木耳产量达42.4万吨,据介绍,目前我国食用菌产量占世界总产量的65%, 相似文献
17.
18.
YU Xiao-xia ZHAO Ning LI Hui JIE Qin ZHAI Hong HE Shao-zhen LI Qiang LIU Qing-chang 《中国农业科学(英文版)》2014,(2):310-315
Sweetpotato(Ipomoea batatas(L.)Lam.)breeding is challenging due to its genetic complexity.In the present study,interval mapping(IM)and multiple quantitative trait locus(QTL)model(MQM)analysis were used to identify QTLs for starch content with a mapping population consisting of 202 F1 individuals of a cross between Xushu 18,a cultivar susceptible to stem nematodes,with high yield and moderate starch,and Xu 781,which is resistant to stem nematodes,has low yield and high starch content.Six QTLs for starch content were mapped on six linkage groups of the Xu 781 map,explaining 9.1-38.8%of the variation.Especially,one of them,DMFN4,accounted for 38.8%of starch content variation,which is the QTL that explains the highest phenotypic variation detected to date in sweetpotato.All of the six QTLs had a positive effect on the variation of the starch content,which indicated the inheritance derived from the parent Xu 781.Two QTLs for starch content were detected on two linkage groups of the Xushu 18 map,explaining 14.3 and 16.1%of the variation,respectively.They had a negative effect on the variation,indicating the inheritance derived from Xu 781.Seven of eight QTLs were co-localized with a single marker.This is the first report on the development of QTLs co-localized with a single marker in sweetpotato.These QTLs and their co-localized markers may be used in marker-assisted breeding for the starch content of sweetpotato. 相似文献
19.
YU Xiao-xia ZHAO Ning LI Hui JIE Qin ZHAI Hong HE Shao-zhen LI Qiang LIU Qing-chang 《农业科学学报》2014,13(2):310-315
Sweetpotato (Ipomoea batatas (L.) Lam.) breeding is challenging due to its genetic complexity. In the present study, interval mapping (IM) and multiple quantitative trait locus (QTL) model (MQM) analysis were used to identify QTLs for starch content with a mapping population consisting of 202 F1 individuals of a cross between Xushu 18, a cultivar susceptible to stem nematodes, with high yield and moderate starch, and Xu 781, which is resistant to stem nematodes, has low yield and high starch content. Six QTLs for starch content were mapped on six linkage groups of the Xu 781 map, explaining 9.1-38.8% of the variation. Especially, one of them, DMFN 4, accounted for 38.8% of starch content variation, which is the QTL that explains the highest phenotypic variation detected to date in sweetpotato. All of the six QTLs had a positive effect on the variation of the starch content, which indicated the inheritance derived from the parent Xu 781. Two QTLs for starch content were detected on two linkage groups of the Xushu 18 map, explaining 14.3 and 16.1% of the variation, respectively. They had a negative effect on the variation, indicating the inheritance derived from Xu 781. Seven of eight QTLs were co-localized with a single marker. This is the first report on the development of QTLs co-localized with a single marker in sweetpotato. These QTLs and their co-localized markers may be used in marker-assisted breeding for the starch content of sweetpotato. 相似文献
20.
对福建省781个柑橘园和315个龙眼园的土训进行分析,结果表明,这2种果园多数的土壤有机质质量分处于良好水平,土训有机质质量分数与有效性养分质量分数关系密切,土训有效性养分质量分随有机质质量分数的增加而增加,柑橘园与龙眼园土壤的有机质质量分数分别为15-35和10-30g.kg^-1, 其土壤有效性养分质量分数较为适宜,因此,上述2种果园的土壤有机质质量分数可作为较为适宜范围。 相似文献