57个水稻、旱稻品种通过2003年国家审定

日前 ,57个水稻、旱稻品种经第一届国家农作物品种审定委员会审定通过。这些品种是 :华航一号、菲优多系1号、优优998、T优5537、D奇宝优1号、丰华占、博优253、博优1025、博优998、嘉早312、八两优96(810S×怀96 -1)、中选181、中选972、德农2000(原名 :协优7954)、冈优3551、红优2009、富优1号 (原名 :II优21)、B优827(原名 :803A/527)、中优177、川香优2号、宜香1577(原名 :宜香优1577)、两优932、II优084、K优818、丰优香占 (原名 :25优6547)、I优86、安两优318(安湘S×R318)、威优134、两优363、中优448、湘晚籼10号 (原名 :农香…     

我省又审(认)定一批农作物新品种

湖南省农作物品种审定委员会,于1993年1月在长沙审定通过了20个新品种,认定了4个品种。 审定合格的新品种有:水稻品种“湘早籼13号”(原编号“怀4077-2”)、“湘早籼14号”(原名“怀早5号”)、“湘早籼15号”(原编号“86-70”)、“余水糯”、“威优77”、“I优323”(优IA×323)、“协优432”;大麦品种“湘皮2号”(原编号“1902”);小麦品种“湘麦13号” (原编号“湘1201”);玉米品种“掖单51”;绿豆品种“中绿1号”;花生品种     

湖南省审定一批农作物新品种

1991年3月,湖南省农作物品种审定委员会审定通过了22个农作物新品种。审定的水稻品种有:湘早籼10号(原名85-151)和湘旱籼11号(原名7-81),系湖南省水稻研究所选育的两个中熟早籼;中156,系湘潭市农科所引进的中熟早籼;浙733,系益阳地区农科所引进的迟熟早籼;威优辐     

1999年度全国审定通过的水稻新品种

日前,农业部公告(第107号),全国有24个水稻新品种通过第三届全国农作物品种审定委员会第三次会议审定.这些品种是:优Ⅰ66、中农稻1号(原名中作9128)、辽盐9号、辽盐糯10号、垦育12号(原名WD06)、超产1号、辽粳294、优优128、Ⅱ优128、镇稻6号(原名镇稻532)、K优17、K优5号、K优404、山溪占11、优优389(原名优Ⅰ389)、Ⅱ优838、鄂糯7号、特籼占13、Ⅱ优92(原名Ⅱ优20964)、威优402、连粳2号(原名连8671)、宝农12(原名92-12)、特优18、新优赣22号(原名新优752). (本刊)     

湖南审(认)定一批农作物优良品种(组合)

1992年1月20日,湖南省农作物品种审定委员会在长沙又审(认)定了一批农作物新品种。审定合格的品种有:水稻品种(组合)共计8个,其中旱稻3个:中86-44,湘旱籼12号,威优438;中稻1个:湘中籼3号;晚稻4个:湘晚籼3号,湘晚籼4号,汕优36辐,湘粳1号;玉米品种1个:湘玉5号;甜玉米品种1个:湘甜玉1号;大豆品种1个:湘春豆     

湖南审定通过一批农作物新品种

湖南农作物品种审定委员会最近召开了第五次农作物品种审定会议,审定了一批合格的农作物新品种。其中包括两个早籼中熟杂交稻组合:威优48(V20A×测48—2)与威优1196(V20A×1126);一个大豆品种:湘春豆12号(原编号衡春豆1号);两个红薯品种:湘薯11号(原编号78—76)与湘薯     

中、晚稻两用新品种湘中籼3号

湘中籼3号(原名88-140)是我所用湘早籼1号与湘中籼2号杂交选育而成的一个高产、多抗、适应性强、早熟中籼新品种。1992年元月,通过省农作物品种审定委员会审定命名为湘中籼3号。适宜于我省以及长江中下游地区作中、晚稻栽培。     

威优华联2号

威优华联 2号(V20A×华联2号,原名辐26),由湖南杂交水稻研究中心、华联杂交水稻开发公司育成,其恢复系华联2号是用26窄早辐射等处理后所获得的突变体,再连续测交筛选而成。一、产量表现 1988年,该组合参加杂交早稻新组合比较试验,亩产520公斤,居第一位。比威优48-2增产14.14%,比湘早籼1号增产16.7%,均达到极显著水平;在湘中、湘北等地参加多点试验,在参试的五个组合(品种)中,5个点均居第一位。比威优48-2增产9.3%,比威优49增产6.3%。倒种春试验,7月5日播,7月 29日插,在低肥水平下,亩产421.5公斤,比威优49增产7.2%。1989年,该组合同时参加全…     

2003年31个水稻品种通过国家审定

2003年2月 ,农业部发布公告 ,共有121个农作物品种通过国家农作物品种审定委员会审定 ,其中 ,水稻品种有31个。它们是 :博II优15、粤丰占、冈优1577、冈优527、D优527、汕优448、II优718、秀水13(原名 :丙95 -13)、清江1号 (原名 :辐优57)、秋优1025、博优938(原名 :博优9308)、博II优213、中津1号 (原名 :中作9714)、津粳杂2号 (原名 :津优9701)、垦稻98-1、垦育16号、雨田1号、辽粳288、沈稻8718、盐两优2818(原名 :GB028S/C418)、开粳3号 (原名 :开9502)、抚粳4号 (原名 :抚85101)、新生71、九稻27(原名 :九新152)、宁粳23号 (原名 …     

湖南又审定一批农作物新品种

在1989年12月召开的湖南省第6次农作物品种审定会上,我省又有16个新品种(组合)通过审定,另有6个品种(组合)被认定。他们是: 水稻:湘早籼6号(原名益早3号),是沅江市农科所选育的早熟早籼;湘早籼7号(原名怀早4号),是怀化地区农科所选育的中熟早籼;湘早籼8号(原编号84-     

Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi

Abstract

Grain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike.     

Allelopathy in Agroecosystems in Spain

Summary

This paper reviews the effects of allelopathic interactions in agroecosystems in Spain on plant physiological activity and their ecological advantages. The phenological stage of growth of donor plants and the effective allelochemicals in the soil solution while studying the role of phenolic compounds were highlighting. Finally possible future prospects and conclusions regarding weed control by allelochemi-cals under integrated crop management strategies are discussed.     

2009年中国稻米市场分析及2010年展望

以翔实的资料对2009年中国稻米生产、消费、进出口、供求平衡、库存、价格走势、购销政策和国际稻米供求等情况进行了全面地分析,对影响2010年稻米市场价格走势的各种因素进行了深入研究,并在此基础上对2010年我国稻米市场价格走势进行了预测,结论是我国稻米价格仍呈上行趋势。     

Advances in Variable Rate Technology Application in Potato in The Netherlands

Precision agriculture is a farming management concept based on observing, measuring and responding to inter- and intra-field variability in crops. In this paper, we focus on responding to intra-field variability in potato crops and analyse variable rate applications (VRAs). We made an overview of potential VRAs in potato crop management in The Netherlands. We identified 13 potential VRAs in potato, ranging from soil tillage to planting to crop care to selective harvest. We ranked them on availability of ‘proof of concept’ and on-farm test results. For five VRAs, we found test results allowing to make a cost-benefit assessment. These five VRAs were as follows: planting, soil herbicide weed control, N side dress, late blight control and haulm killing. They use one of two types of spatial data: soil maps or biomass index maps. Data on costs and savings of the VRAs showed that the investments in VRAs will pay off under practical conditions in The Netherlands. Savings on pesticide use and N-fertilizer use with the VRAs were on average about 25%, which benefits the environment too. We foresee a slow but gradual adoption of VRAs in potato production. More VRAs will become available given ongoing R&D. The perspectives of VRAs in potatoes are discussed.     

我国高粱育种研究进展

对我国高粱育种的主要途径和研究方向进行了概述,针对目前高粱产量徘徊现象,提出了高粱超高产育种设想,并对其技术路线进行了探讨。     

Diurnal changes in net photosynthetic rate in potato in two environments

Summary Diurnal changes in net photosynthetic rate were measured in a furrow-irrigated potato crop and in a riverbed crop where the water table was always maintained at 20–28 cm from the soil surface. In the irrigated crop, the photosynthetic rate during mid-afternoon was about half the peak rate observed at noon. This reduction was accompanied by a near tripling of stomatal resistance, a 45% reduction in transpiration, and a 5-fold increase in the difference between leaf and air temperatures. No such changes were observed in the riverbed crop where the photosynthetic rate remained nearly constant at about 0.9 mg m⁻² s⁻¹ between 9 a.m. and 4 p.m. Tuber yield in the riverbed crop was about 30% higher than in the irrigated crop.     

我国干热区甘蔗抗旱植蔗主要问题研讨

我国干热蔗区是我国甘蔗糖业的重要生产基地,蔗区光热资源丰富,唯降水分布不均成为植蔗生产的主要限制因子;根据蔗区植蔗特点和甘蔗需水规律,苗期抗旱是干热蔗区抗旱植蔗的关键,保证较多的总苗数和足够的生长量是苗期抗旱植蔗需解决的关键技术难题,制定相应的苗期抗旱植蔗栽培技术措施是解决该难题的重要保障;该观点为我国干热蔗区植蔗生产、甘蔗引育种提供理论和技术支持。     

棉花体细胞无性系变异的研究进展

体细胞无性系变异是一种重要的细胞工程育种技术,其应用于棉花育种的前提是建立高效的组织培养诱导再生植株体系.本文简要综述了棉花离体诱导植株再生研究的现状,重点讨论了棉花体细胞无性系变异的表现、利用方法及机理,提出了当前研究存在的问题并对今后的研究进行了展望.