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香白糯是仲恺农业工程学院(原仲恺农业技术学院)选育的一个优质、高产、早熟的果蔬型糯玉米单交种.2001年3月通过广东省农作物品种审定委员会审定(粤审玉200103)并定名为“香白糯”,是广东省第一个通过品种审定的糯玉米新品种。至2009年止.该品种一直作为广东省糯玉米区试的对照品种.已在广东省范围内推广应用面积累计超过4万hm^2。 相似文献
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七佛占是广东省佛山市农业科学研究所选育的感温型中迟熟籼稻新品种,具有米质好、产量高、高抗稻瘟病的特点。该品种于2012年1月通过广东省农作物品种审定,适宜广东省粤北以外稻区作早、晚季种植。 相似文献
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新丰占是广东省佛山市农业科学研究所选育的感温型中熟籼稻新品种,具有米质好、产量高、抗稻瘟病的特点。该品种于2010年5月通过广东省农作物品种审定,适宜广东省各稻作区晚季和粤北以外稻作区早季种植。 相似文献
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解放前,广东省甘蔗选育种没有专门的科研机构,只有别私人甘蔗场引进台湾及引进菲律宾的甘蔗品种。解放后,广东省人民政府在顺德五沙设 立了甘蔗试验场,大力推广台糖134,使该品种在长达20年时间内一直成为广东省的主栽品种。 相似文献
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野籼占6号是广东省惠州市农科所近年用桂野占2号/特籼占13//IR24杂交育成的优质高产水稻新品种。该品种具有高产、优质、熟期适中、抗病、抗倒伏、稳产、生态适应性广等特点 ,是一个综合性状较突出的品种 ,2001年广东省累计种植面积4386.67hm2,2002年3月通过广东省品种审定委员会审定 ,并参加当年南方稻区国家水稻品种区试。一、主要特征特性1.丰产性突出野籼占6号于1999年参加广东省晚季常规稻品种区试 ,平均单产416.41kg/667m2,比对照三二矮增产12.7% ,达极显著水平 ,名列5个参… 相似文献
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洋葱伯克氏菌是一组表型相似但基因型不同的细菌群(Burkholderia cepacia complex, 简称Bcc),它存在于水稻生境和医院中,了解水稻根围Bcc菌株基因型的地位对水稻微生物安全性具有重要的意义。以recA基因的HaeⅢ RFLP技术和基因型特异性PCR扩增为主要方法对来自水稻根围的78株和来自医院的9株Bcc菌株进行了基因型分析。研究表明水稻根围存在Bcc菌株Ⅰ、ⅢB和Ⅴ基因型, 其中Ⅴ型为优势菌;而在医院来源的Bcc菌株中,存在Ⅰ、ⅢA和ⅢB型,以ⅢA型菌株最多。这表明我国水稻根围和医院中的洋葱伯克氏菌基因型构成存在差异。同时研究发现水稻根围的Bcc菌群具有明显的遗传多态性,且存在致病力强的Ⅲ型菌株。 相似文献
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SSR标记在水稻抗稻瘟病研究中的应用 总被引:1,自引:0,他引:1
稻瘟病是水稻的主要病害之一,抗病品种的选育是防治稻瘟病的主要途径。微卫星DNA分子标记(简称SSR)为辅助选育抗稻瘟病水稻新品种和抗性鉴定提供了新的思路。通过介绍SSR的原理和方法,阐述SSR在水稻抗稻瘟病研究中的应用,为揭示稻瘟病的分子遗传机理奠定了基础。 相似文献
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蛋白质含量与稻米食味品质关系密切。目前的研究发现,一些表观蛋白含量相近的水稻品种食味评分差异很大,可能与其蛋白组分有一定关系。本研究在前人基础上从蛋白的提取剂、进样量、固定及染色等方面进行优化,建立了两种水稻蛋白电泳方法,即水稻清蛋白电泳方法及水稻谷蛋白电泳方法。采用改进后的水稻谷蛋白电泳方法进行谱带分析,发现蛋白含量相近、食味评分不同的水稻品种谷蛋白电泳谱带无差异;北方粳稻和南方粳稻的谷蛋白电泳谱带有差异。对不同来源的粳稻品种,采用优化后的清蛋白电泳方法进行谱带分析,发现蛋白含量相近、食味评分不同的水稻品种,70~105 kDa处谱带缺失或谱带浓度加强。初步确认105 kDa是与稻米食味相关的谱带,谱带颜色越深,稻米食味品质越好。 相似文献
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《水稻科学》2000,8(4)
Shanxi black rice It was originally from Yang County, Hanzhong Region.This rice was a world-famous rice variety developed in 140 BC. It had pitch-black surface with the protein and oil contents being 6.8% and 20% higher than that of common rice, respectively. It had 15 kinds of amino acids and many kinds of vitamins. It was praised as" Black pearl" and "The king of the world riee".DongnianThe other names for Dongnian were "Yellow rice" and "Oil rice". It was grown in E City and Huangmei County,Hubei Province. It was characterized by its long-slim shape, milky yellow in color, oily, solid, and sticky quality, fragrant smell, and easiness for digestion.Guizhou black pearl rice 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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Lou Miao miao ZHANG Li xin Su Ting XIE Guan lin 《水稻科学》2007,14(3):229-234
Burkholderia cepacia is regarded as a genetically distinct but phenotypically similar bacteria group referring to Burkholderia cepacia complex (Bcc), which is found not only in clinic but also in rice growing environment. It is very important in microbial safety of rice for us to understand the genomovar status of Bcc. Genomovar analysis was performed among 87 Bcc isolates by means of Hae Ⅲ-recA RFLP assays and species-specific PCR tests. Three genomovars were found from the rice rhizosphere includingⅠ, ⅢB and Ⅴ, and genomovar Ⅴ was predominant. GenomovarsⅠ, ⅢA and ⅢB existed in the clinical samples, and genomovar ⅢA was the most popular. It showed that genomovar composition was different between the Bcc strains from the rice rhizosphere and clinical environment. Simultaneously, the results revealed the genetic diversity of Bcc strains from the rice rhizosphere, and genomovar Ⅲ referred as virulent species in clinic also existed in the rice rhizosphere. 相似文献
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以粳稻H129为材料,对稻米的脂解酶进行了研究。水稻脂解酶主要位于胚芽及盾片部分,它含有数种性质不同的同功酶;灭菌与不灭菌水稻脂解酶活性的变化曲线不一致;与前人的研究结论相反,未萌发或休眠的米糖部分未检测出脂解酶活性。 相似文献