With 4 bivoltine strainsas group A and 4 strains of bivoltinism, with their ancestry of multivoltinism, or of multi-voltinism as group B, 32 crosses were made according to a diallel mating design to evaluate the combining ability and heritability of resistance of silkworm larvae to CPV. The result showed that the relative effect values of the general combining ability (GCA) among parents and the special combining ability (SCA) among crosses were significantly different.

Four varieties, namely Xinjiu, 683,Dong34 and 7532. revealed comparatively higher general combining ability, therefore, possessed higher utility in breeding.

The results were as follows: (1) For all characters, general combining ability in six parents (GCA) achieved highly significant level ( P <0.01), special combining ability (SCA) only significant ( P <0.05),therefore the additive effect is more important for royal jelly yield and quality properties;

With 4 bivoltine strainsas group A and 4 strains of bivoltinism, with their ancestry of multivoltinism, or of multi-voltinism as group B, 32 crosses were made according to a diallel mating design to evaluate the combining ability and heritability of resistance of silkworm larvae to CPV. The result showed that the relative effect values of the general combining ability (GCA) among parents and the special combining ability (SCA) among crosses were significantly different.

The differences of the relative effects of the GCA among multivoltine strains and bivoltine strains containing multivoltine pedigrees were larger than those among bivoltine strains.

The main results are as follows: Variances of general combiningability (GCA) of 10 quantitative characters among each strain tested, as wellas those of special combining ability(SCA) of 9 characters among crosses wereall highly significant.

The results were as follows: (1) For all characters, general combining ability in six parents (GCA) achieved highly significant level ( P <0.01), special combining ability (SCA) only significant ( P <0.05),therefore the additive effect is more important for royal jelly yield and quality properties;

The results indicate that :(1 )Both combing a- bilitr (GCA and SCA) varances are significantly different (P<0. 05), so both additive and non-additive effects have influ- ences on. these characters.

The general availability value of 54,Chun,ZHG and Yue was the highest, and the special availability value of ZHG ×Chun 54, He × Qiu and Yue× Chun was the highest. 5. The adaptability to granule artificial diet of ZHG × Chun 54 was the strongest.

caucasica in bee pollen and A. m. aceruorum in royal jelly, their GCAS are greater, so they are of great value on increasing the yield of relative economic property.

However, the characteristics of androgenesis were the highest in those hybrid combinations in which genotypes with high values of general combining ability (GCA) and positive effects of specific combining ability (SCA) participated.

Attempts to construct synthetic populations by combining self-fertile forms selected by general combining ability failed because of high-rate selfing.

General combining ability effects were more important for both characters.Per se performance appeared to be a good index to rank the parental lines for general combining ability.

The study indicated that both general combining ability and specific combining ability effects were significant and important for all three traits.

General combining ability seemed to be more important for all the characters.

However, the characteristics of androgenesis were the highest in those hybrid combinations in which genotypes with high values of general combining ability (GCA) and positive effects of specific combining ability (SCA) participated.

chthonoplastes was localized, at least partly, in a vast glycocalix (gCA) as shown by Western blotting and the measurement of enzyme activity in the isolated glycocalix preparations.

chthonoplastes with the antibodies against thylakoid CA from Chlamydomonas reinhardtii (Cah3) demonstrated that gCA belongs to the α-type of enzyme and has the structure identical to that of Cah3.

This paper presents pattern formation in generalized cellular automata (GCA) by varying parameters of classic "game of life".

The influence of remembrance of dynamic behavior of GCA is also studied.

With 4 bivoltine strainsas group A and 4 strains of bivoltinism, with their ancestry of multivoltinism, or of multi-voltinism as group B, 32 crosses were made according to a diallel mating design to evaluate the combining ability and heritability of resistance of silkworm larvae to CPV. The result showed that the relative effect values of the general combining ability (GCA) among parents and the special combining ability (SCA) among crosses were significantly different. The differences of the relative effects...

With 4 bivoltine strainsas group A and 4 strains of bivoltinism, with their ancestry of multivoltinism, or of multi-voltinism as group B, 32 crosses were made according to a diallel mating design to evaluate the combining ability and heritability of resistance of silkworm larvae to CPV. The result showed that the relative effect values of the general combining ability (GCA) among parents and the special combining ability (SCA) among crosses were significantly different. The differences of the relative effects of the GCA among multivoltine strains and bivoltine strains containing multivoltine pedigrees were larger than those among bivoltine strains. The reciprocal crosses as well as the crosses of one of these strains outcrossed with other stra ins gave different values in the relative effect of SCA of the same strains. Moreover, diallel analysis showed that the variance of GCA(Vg% ) was 76.63%, the value of SCA (Vs% ) was 23.37. In the reciprocal crosses the variance for GCA ( Vg% ) was 45.12, and the variance for SCA (Vs%) was 54. 88. Therefore, the former showed an obvious additve effect and the latter gave a non-additive effect. The broad sense heritability ( BSH ) was 87.84% and the narrow sense of heritability ( NSH ) was 67.32%. But in the reciprocal crosses, BSH was 97.06%, NSH was 43.79%.

According to a 5×4 incomplete dillel mating design 9 strains of silkwormwere uqed to make 20 crosses (not including reciprocal crosses) to evaluate thecombining ability and heritability of 10 quantitative characters of silkworm inthig study. The main results are as follows: Variances of general combiningability (GCA) of 10 quantitative characters among each strain tested, as wellas those of special combining ability(SCA) of 9 characters among crosses wereall highly significant. The relative effect values of...

According to a 5×4 incomplete dillel mating design 9 strains of silkwormwere uqed to make 20 crosses (not including reciprocal crosses) to evaluate thecombining ability and heritability of 10 quantitative characters of silkworm inthig study. The main results are as follows: Variances of general combiningability (GCA) of 10 quantitative characters among each strain tested, as wellas those of special combining ability(SCA) of 9 characters among crosses wereall highly significant. The relative effect values of different characters in eachstrain were significant, so were those for different strains of each character.The ranges in GCA of characters among strains were different. It was foundthat each cross had different relative effects in different characters, and eachcharacters in different strains also had different relative effect values. TheSCA of different crosses showed a complex manner, however, it was possibleto evaluate the SCA of F1 crosses according to their parent's GCA. The cocoon shell weight. The cocoon shell percentage. the cocoon filamentlength, the number of eggs produced by one female had higher narrow senseof heritability (NSH), while the cocoon weight. the reelability. the length ofnon--broken cocoon filament. the cocoon filameut size, and the sensitivity toNPV had middle or lowor NSH. Moreover, The BSH of some characters weremuch higher than their NSH, it indicated that the nonadditive effects werestill significant.

Combining ability analysis was conducted in crosses among 9 silkworm varieties in anuncomplete diallel cross design. The new variety of ″86A 86B × 243. 463″ was selectedfrom numerous laboratory tests and commercial scale evaluations. The results indicatedthat varieties of ″86A· 86B″ and ″243″ had a better general combining ability and that varieties of ″86A· 86B × 243″ and ″86B× 463″had a better special combining ability, new variety″86A. 86B × 243″ 463″ was more healthy, and more adaptine to the environments....

Combining ability analysis was conducted in crosses among 9 silkworm varieties in anuncomplete diallel cross design. The new variety of ″86A 86B × 243. 463″ was selectedfrom numerous laboratory tests and commercial scale evaluations. The results indicatedthat varieties of ″86A· 86B″ and ″243″ had a better general combining ability and that varieties of ″86A· 86B × 243″ and ″86B× 463″had a better special combining ability, new variety″86A. 86B × 243″ 463″ was more healthy, and more adaptine to the environments. The harvesting weight and the cocoon shell weight of 10,000 head silkworm increased about 7%respectively. Therefore this variety should be considered a good new variety.