APPLICATIONS OF BOOROOLA MERINO MAJOR GENE IN SHEEP BREEDING;

The subject of the mixed genetic model that is a single identified locus plus polygenes,the breeding objective that includes two correlative traits,some factors such as major gene variance proportion,heritability and genetic correlation which may act on the RSE were synchronously examined to sort out some vital ones which would be controlled to bring into full play in practic.

This review introduced reproductive characteristics of some high prolific sheep breeds abroad and the discovery,genetic effect,chromosome mapping of relevant major genes in these sheep breeds.

Analysis of gene effects on asexual reproductive characters in silkworm(Bombyx mori L.);

Study on additive dominant genetic model and gene effects was conducted on the data of 4 populations white 338 litters including Erhualian pigs(P\-1), Large Whith(P\-2), first cross(F\-1) and backcross(B\-2).

The maternal effects and gene effects on body weights at birth (BWB), 20 days of age (BW20) and 60 days of age (BW60) in pigs were estimated by least square multiple regression procedure, using group least square means of Erhualian (EHL), Large White (LW) and their F 1, F 2 and backcross (to LW pigs) (8 groups of animals in total).

Study on additive-dominant genetic model and gene effects on litter size in Erhualian pigs and Large White;

In order to estimate gene effects on plant height, days to heading, panicle length, spikelets per panicle, spikelets density and mean grains per spikelet in the tested lines, each of the two tested lines was crossed with a set of 3 tester lines which had great genetic diversity in various characters, each combination has got 6 generatio.

In this paper, the genetic basis of heterosis is analyzed from genetic difference, gene expression, gene effects, and gene network system.

This review introduces bone morphogenetic protein receptor IB (BMPR-IB), bone morphogenetic protein 15 (BMP15 ), and growth differentiation factor 9 (GDF9 ) major genes, and their relationships with high prolificacy in sheep, and application of both BMPR-IB and BMP15 major genes.

In order to analyze the resistant gene(s) and the genetic characteristic of the cultivars,classic genetics and allelic analysis were used to assay the number,recessive or dominance,interaction and inherited traits of the major genes in Mentana with a few races and examine differences between newly found resistant genes and the known genes.

Cloning and expression of 2.5 kb enhancin gene from Trichoplusia ni granulosis virus in Escherichia coli;

A span enhancin gene of Trichoplusia ni granulovirus was amplified by PCR and cloned into pRSET-B vector successfully.