60 research outputs found

    Seed Phytosanitary Regulations

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    The harmonization of seed policies and regulations in the ASARECA member countries is the first step toward creating a seed market that is large enough to attract investment by local and international investors who will provide the quantity, quality and variety of improved seed to meet the region’s growing demands. Since September 1999, ASARECA with support from USAID has supported a pilot project through ECAPAPA in the East African Community (EAC) countries of Kenya, Tanzania and Uganda on five specific areas, namely - phytosanitary regulations - seed certification - plant variety protection - laws and regulations governing the seed trade - variety evaluation, release and registration. Each of these areas is the subject of a policy briefThe harmonization of seed policies and regulations in the ASARECA member countries is the first step toward creating a seed market that is large enough to attract investment by local and international investors..

    我国模糊网纹溞(甲壳纲:双甲目)的补充描述

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    我国模糊网纹溞(甲壳纲:双甲目)的补充描述陈受忠,张世萍,宋希强中国科学院水生生物研究所武汉430072华中在业大学水产系日本Ueno氏在记述中国台湾的枝角类一文 ̄[2]的名录表中列入了模糊网纹(Cerio-daphniadubiaRichard,1..

    中国大型介虫属一新种(介形亚纲:腺状介虫科)

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    本文描述了采自贵州省的介形类大型介虫属一新种——平缘大型介虫Hungarocypris levigatus sp.nov.。此新种壳体及附肢形态与产于广州锯缘大型介虫H.serratus Chen,1983十分相似,但有重要差别

    近亲尖额溞Alona affinis(Leydig,1860)的若干生物学特征

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    本文测量计数了采自贵州省江口县凯土河边的154个近亲尖额溞的体长和怀卵量,并探讨了这个种群的一些生物学性状。根据形态特征,确定本种为指名模式亚种

    四川沱江口浮游甲壳动物记述

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    <正> 我国淡水浮游动物的研究,虽有近40年的历史,然而对于江河等流水水体中的浮游甲壳类,却还所知无几。近年来,随着水资源保护研究工作的深入开展,有些地区已经比较全面地调查了江河中各类生物的现状及水污染对它们的影响。四川省对沱江水质的调查即为一例。沱江水质调查中,有关浮游甲壳动物的研究已有报道,为继续了解补充长江的这一重要支流中浮游甲壳类的现状,于1986年4月21—26日,在沱江泸州市区江段及沱江出

    舌镖水蚤属两新种(甲壳纲:桡足亚纲)

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    <正> 在长江浮游生物生态调查工作中,采获舌镖水蚤属的两个新种,现予描述。有关的生态学资料将在今后继续发表。 近亲舌镖水蚤Ligulodiaptomus affinis,新种(图1—9) 雌体特征:体长1.46—1.84毫米。第四、五胸节中部愈合,第五胸节两后侧角扩展,角顶及后缘各有小刺。腹部分三节。生殖节的前半部向两侧扩展,右侧突起较尖,顶端
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