^60Co—γ射线诱发的籼型温敏核不育水稻叶色突变系变异分析   总被引：8，自引：0，他引：8  

吴殿星  景晓阳 《作物学报》1999,25(1):64-69

＾６０Ｃｏ－γ射线诱发的８个灿温敏核不育系水稻叶色突变系可分为三种类型，即叶色突变高温表达型、低温表达型及温钝型。  相似文献   

"中华红又亮"对断奶仔猪的饲喂效果试验     

四川省畜科饲料有限公司 《四川畜牧兽医》2004,31(9):27-27,29

试验选用体重约8kg的三元杂交猪(杜×长×大)60头,随机分成3组,每组2个重复,分别饲喂含不同剂量"中华红又亮"的饲粮,研究"中华红又亮"对仔猪生产性能、肤色的影响.结果表明,以"中华红又亮"取代饲粮中部分硫酸亚铁,可显著提高仔猪平均日增重(P＜0.05),显著降低料重比(P＜0.05),明显改善仔猪肤色.根据试验效果,仔猪饲粮中"中华红又亮"的添加浓度宜为3.0x10-.4 6.0x10-4.  相似文献   

高蛋白大豆品种食心虫抗性与相关性状分析简报   总被引：1，自引：0，他引：1  

元明浩  孟广萍  于晶 《大豆科技》2009,(6):42-43

以8份吉林省高蛋白大豆品种为材料，对其食心虫抗性及相关性状进行比较分析。结果表明，丰交7607、九农20表现为高抗（受害粒率1．59％～1．64％），吉小粒7号、长农15、九农21表现为抗虫（受害粒率2．14％～2．55％），黑农48表现为感虫（受害粒率7．29％），黑农38、吉育47表现为中抗（受害粒率4．26％-5．22％）。大豆荚熟色越深的品种表现出的抗性越强。蛋白质含量与抗性无显著性相关。  相似文献   

泰国政府投巨资收储农产品     

江军译 《热带作物学报》2009,33(1):15-16

以三色竹芋的侧芽为外植体，研究了三色竹芋不定芽诱导、增殖和生根的组织培养过程，并研究了6-BA浓度和继代次数对叶片颜色的影响。结果表明：以三色竹芋的侧芽为外植体，经过芽的分化、增殖和生根可获得批量组培苗；降低6-BA的浓度，减少继代次数，有利于保持叶片的颜色。  相似文献   

Green color protection of bamboo culms using one-step alkali pretreatment-free process     

Jyh-Horng Wu  Min-Jay Chung  Shang-Tzen Chang 《Journal of Wood Science》2005,51(6):622-627

This study evaluated the protection effectiveness of alcohol-borne reagents for the green color of ma bamboo (Dendrocalamus latiflorus Munro) and moso bamboo (Phyllostachys pubescens Mazel). The results show that the types and concentrations of alcohol-borne reagents, the kinds of solvent, and the conditions of treatment greatly affected the green color of these two bamboo species. Without alkali pretreatment, an excellent green color protection (a* = −14.5) was obtained when the ma bamboo culms were treated with 0.5% methanol-borne copper chloride (CuCl₂) at 60°C for 30 min. Similar results were also obtained when ma bamboo culms were treated with 0.5% methanol-borne copper nitrate [Cu(NO₃)₂] at 60°C for 2 h (a* = −13.5). For moso bamboo, an attractive green color in the bamboo culms was achieved by treating the specimens with 1% methanol-borne copper acetate [Cu(CH₃COO)₂] at 60°C for 30 min. The a* value of treated specimens was −13.3. In addition, results demonstrated that ultrasonic treatment was more effective on green color protection than conventional water bath treatment. When moso bamboo was treated with 1% copper acetate at 60°C in an ultrasonic bath for only 15 min, a remarkable green color with an a* value of −13.6 was obtained on the bamboo epidermis.  相似文献   

油茶果形果色分类及经济性状   总被引：4，自引：0，他引：4  

彭邵锋  陈永忠  张日清  杨小胡  王湘南  陆佳 《中南林业科技大学学报(自然科学版)》2007,27(5):33-39

以油茶成林的成熟果实为材料,对果形果色进行了分类并研究了相关经济性状.结果表明:油茶果形可分为桔形、球形、卵形、橄榄形4大类,果色可分为红色、红黄色、青黄色、青色4种基本颜色;果径是果实形态中最重要的指标,它与果高、鲜果质量、心室数、籽数均存在极显著正相关关系,与果形指数、干籽含油率存在极显著负相关关系,其中果径与鲜果质量的相关系数达到0.946,建立了果径-鲜果质量回归方程为y=19.529-1.591x 0.049x2,干籽含油率与果形指数和果实颜色变化一致;从各个经济性状指标值来看,球形与卵形,红色与红黄色,青色与青黄色之间基本接近,差异不显著.  相似文献   

基于神经网络和颜色特征对木材进行分级的分析   总被引：8，自引：0，他引：8  

戴天虹  王克奇  白雪冰  陈立君  谢永华 《森林工程》2006,22(1):18-20

为了解决木材的分级问题，提出了利用神经网络和木材表面颜色特征对木材进行分级的方法。利用竞争神经网络对114种不同树种进行粗分，然后再用BP神经网络算法对此进行验证，又对四种木材进行分类验证。从计算机分类分级仿真效果上看，达到了预期的目的。  相似文献   

浅谈居住区内的色彩设计     

吴永林  孙力伟 《林业科技情报》2005,37(4):36-37

居住区是构成城市的有机组成部分，居住区的优美环境是居住区的生命。本文通过居住区内的绿化、建筑、小品和铺地四个方面色彩设计的内容介绍，阐明了色彩设计不仅能体现小区整体的生动关感．而且在城市规划建设、提升城市品位方面中发挥着重要的作用。  相似文献   

Species composition of Modellidae and Cerambycidae (Coleoptera) in a coppice woodland     

Amin Setyo Leksono  Kenta Takada  Nobukazu Nakagoshi  Koji Nakamura 《Journal of Forest Research》2006,11(1):61-64

A continuous sampling of canopy beetles was carried out to determine variations in the abundance, species diversity, richness, and composition of the Mordellidae and Cerambycidae in a coppice woodland. Changes in the abundance and the species richness were monitored at three heights in the forest throughout the season in 1999, using yellow and blue water pan traps. The results showed significant variations in the abundance of Mordellidae among the canopy layers, while little variation was found for Cerambycidae. The abundance, species diversity, and richness were generally greater in summer. The results showed distinct species compositions in both families among layers.  相似文献   

彩叶植物及园林应用     

邵果园 《热带农业科技》2006,29(4):22-24

简要介绍彩色植物的分类,呈色的影响因素,园林配置方式和研究、应用的发展方向。  相似文献