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刘雪海 《中国油料作物学报》1992,(1)
河北省花生种植面积常年在400余万亩。为解决生产上存在的品种混杂退化,产量低而不稳,病害严重,商品价值低的问题,1977年我们配制了油麻1—1×金白1号杂交组合,经连年选育,育出了高产、优质、抗病花生新品种冀油4号。1986年通过河北省农作物品种审定委员会审定,1990年获河北省科技进步二等奖和河北省第五届技术交易会金奖,1991年获国家科技进步三等奖。 相似文献
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冀棉8号(原系号石1724)是我所1974年从河北省作物所引入的杂种一代材料,组合为:冀邯5号×[(岱字45×紫花)F_2r_2],经过连续选育而成。该品种具有高产、稳产、适应性强、纤维品质优良等特点。1983年3月河北省农作物品种审定委员会审定命名,定为河北省的推广品种。为鉴定冀棉8号在不同生态条件下的栽培技术, 相似文献
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2003年国审玉米品种介绍 总被引:7,自引:0,他引:7
1.品种审定编号:国审玉2003001作物种类:玉米品种名称:冀玉9号选育单位:河北省农林科学院粮油作物研究所品种来源:冀15-22×冀35。冀15-22是利用冀257与冀815杂交并用F1代花粉进行混粉姊妹交后,1993年播种F2代种子后连续自交4个世代;冀35是用黄早四与农家种冀多142杂交,再用黄早四回交之后,经6个世代连续自交分离筛选育成。省级审定情况:2001年通过河北省农作物品种审定委员会审定。特征特性:幼苗绿色,芽鞘紫色,长势健壮,株型半紧凑,根系发达,20片叶左右,叶片上冲、较宽,叶色深绿,雄穗中等,护颖绿色,花药黄色,花粉量大,雌穗花丝浅红色,果穗… 相似文献
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Down-Regulated Expression of RACK1 Gene by RNA Interference Enhances Drought Tolerance in Rice 总被引:2,自引:0,他引:2
The receptor for activated C-kinase 1 (RACK1) is a highly conserved scaffold protein with versatile functions, and plays important roles in the regulation of plant growth and development. Transgenic rice plants, in which the expression of RACK1 gene was inhibited by RNA interference (RNAi), were studied to elucidate the possible functions of RACK1 in responses to drought stress in rice. Real-time PCR analysis showed that the expression of RACK1 in transgenic rice plants was inhibited by more than 50%. The tolerance to drought stress of the transgenic rice plants was higher as compared with the non-transgenic rice plants. The peroxidation of membrane and the production of malondialdehyde were significantly lower, and the superoxide dismutase activity in transgenic rice plants was significantly higher than those in non-trangenic rice plants. It is suggested that RACK1 negatively regulated the redox system-related tolerance to drought stress of rice plants. 相似文献
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RNA干涉下调RACK1基因表达增强水稻抗旱能力 总被引:1,自引:0,他引:1
RACK1是一种多功能支架蛋白,广泛参与植物生长发育过程的调节。利用RNA干涉技术抑制水稻RACK1基因的表达,分析了RACK1基因在响应干旱胁迫中的功能。实时定量PCR对获得的转基因植株的RACK1基因表达分析结果表明,转基因水稻RACK1基因表达受抑制程度达50%左右。与非转基因水稻(对照)相比,转基因水稻耐干旱能力显著强于对照,其膜的过氧化酶和丙二醛的产生显著低于对照,而超氧化物歧化酶活性极显著高于对照。表明RACK1蛋白质调节水稻对干旱胁迫的耐性,并且这种调节在很大程度上与植株体内的氧化还原系统有关。 相似文献
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Two chemical methods which are commonly used for rice grain freshness determination were investigated for their efficiencies.Method 1 is made of bromothymol blue indicator,and the principle is based on indicator’s color which is changed in according to pH of the stored rice grains.Method 2 is based on peroxidase activity which deteriorates during storage of rice grains.Both methods were used for determination of fresh-aged rice index of six Thai-rice cultivars,four from non-waxy rice cultivars (KDML 105,Chai Nat 1,Chai Nat 2 and Phitsanulok 2) and two from waxy rice cultivars (San-pah-tawng and RD6).Rice samples were kept in the forms of paddy and polished rice.Fresh-aged rice indices were determined using both methods every two weeks over the storage period of 24 weeks (six months).It was found that both methods were capable of detecting fresh-aged rice indices.The color of chemical solutions changed with regards to the age of rice grains and it could be detected spectrophotometrically.Rice grains which have been kept as paddy provided more consistent results.Method 1 is recommended for industrial application as it is simple,efficient and inexpensive. 相似文献
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胎盘乳化液是俄罗斯新产的一种植物生长调节剂,为探讨其在农作物上的应用效果,1997-1998年,采用胎盘乳化液对水稻进行了不同浓度,不同施用主不同水稻品种的喷苗与浸种试验。结果表明,胎盘乳化液对水稻茎秆等营养器官有明显的促进生长的作用, 明显增加每穗实粒数与有效穗数,因而最终能提高产量。 相似文献
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ABC1(Activity of bc1 complex)家族属于蛋白质激酶家族,其成员普遍存在于原核和真核生物中.已有研究表明,几个植物ABC1基因参与非生物胁迫应答.为了解ABC1基因在水稻中的结构和功能,采用生物信息学方法分别在水稻和拟南芥上鉴定出15个和17个ABC1基因,并进行了系统发育和表达分析.结果表明,该家族在单、双子叶植物分离之前就已经发生了分化,其基本特征已经形成;单、双子叶植物分离之后,该家族在水稻和拟南芥中均以物种特异的方式进行了扩增.内含子/外显子结构分析显示多数直系同源基因之间外显子大小接近,而内含子差别较大,水稻含有更多大的内含子;内含子获得是近期伴随水稻ABC1家族进化的重要事件.多序列比对显示,ABC1结构域具有1个保守的氨基酸片段和4个保守的氨基酸残基.在线亚细胞定位预测9个水稻ABC1蛋白定位在叶绿体上.实时定量RT-PCR分析表明,水稻ABC1基因主要在叶片中表达,并且受多种非生物胁迫因素包括H2O2、脱落酸、低温、干旱、黑暗和高盐的调控.说明水稻ABC1家族不仅在逆境胁迫应答中发挥重要作用,可能还与水稻特定的生理过程有关. 相似文献
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