遗传性状

Genetic variation of coleoptile length, Incomplete leaf length and seedling height of 7d after germinated and their correlation with PH were studied by using 95 varieties of japonica rice in 6 different ecotypes under natural and controlled(30 ℃ 12 h light) conditions.

在自然及30℃、12h光照的控制条件下，对6个生态类型的95个粳稻品种芽鞘长度、不完全叶长度及7d后苗高3个幼苗性状的遗传变异及其与株高的相关性进行了研究。

At polymorphic gene locus, the variance components of quantitative trait was described as follows:VA=2βp and VG=p′Xp-G2 in which p=column vector of polymorphic allele frequencies,β=row vector of2,X=［a2ij］i×i matrix,aij=genotype value,and G=population mean.

数量性状相对多态座位的加性方差和遗传方差分别为VA=2βp和VG=p′Xp-G2，其中p′和p分别表示多态等位基因频率的行向量和列向量，X表示以基因型值平方为元素的矩阵，β表示以基因均效平方为元素的行向量，G为群体均数。

Purpose To compare restricted estimation maximum likelihood to markov chain monto carlo for genetic variance component model of quantitative trait in nuclear family.

目的 比较限制性最大似然估计和马尔可夫链蒙特卡罗方法在数量性状遗传方差分量模型中参数估计的偏差和精度。

According to the number one of principal component(percent of variance 69.11%),The ranking among them was Liriodendron tulipifera variance range 0.7156

本论文对鹅掌楸、北美鹅掌楸和杂交鹅掌楸花被片色素及花果数量性状进行了初步研究，比较三大类群的差异，探讨它们的遗传变异规律，为进一步开展鹅掌楸杂交育种服务。

A detailed genetic linkage map covering a large region of the cotton genome based on some informative, portable and practical markers will provide a platform for evolutionary comparisons with other species,comparative mapping,QTL mapping and MAS,and structural and functional studies of the cotton genome.

以简单、可靠、适于高通量分析的分子标记构建高密度的棉花遗传连锁图谱，将不断增多的基因组信息剖析到相应的染色体片段上，才能使分子标记辅助选择育种、重要数量性状基因的图位克隆等后续的研究得到顺利开展。

Different parent have different hereditary effects of yield and quality traits. Rational select the parent will help to crossbreed of Island Cotton and to use hybrid heterosi.

不同亲本对产量、品质性状的遗传效应不同，合理选配亲本有助于海岛棉杂交育种和杂种优势的利用。

The inheritance of some fruit traits in canning yellow peaches was studied in the crossbreeding process.

在用杂交手段选育罐藏黄桃品种的实践中，对果实经济性状的遗传倾向作了分析。

Two hundred and fifty-nine F2:3 and 220 BC2S1 families,derived from the same cross between Dan232,a dent corn inbred and NO4, a popcorn inbred, were evaluated for four developmental stages, tassel emergence, male anthesis, silk emergence and days from male anthesis to silk emergence.

以普通玉米自交系丹232和爆裂玉米自交系N04为亲本构建259个F2.3和220个Bc2S1家系群体，利用SSR标记构建分子标记遗传图谱，利用复合区间作图方法对4个生育期性状进行QTL定位和效应分析。

Polygenic inheritance - A continuous, rather than discrete, set of traits that are influenced by many genes.

多基因遗传-一个持续的，而不是离散的，一套性状是受许多基因。

The emasculation method is effective and rapid for carrot, and the heredit of important characters could be further studied.

因此，本方法可快速有效去除胡萝卜雄蕊，进行自交系之间的杂交，为深入开展优异基因的聚合及胡萝卜重要农艺性状的遗传规律研究奠定了基础。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。