• Journal of the Korean Data and Information Science Society
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• v.11 no.2
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• pp.247-255
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• 2000

Usually, partailly balanced incomplete block design have been used a parametric design that make blocks of complete diallel cross. For that we use triangular PBIBD as parametric design, we have to find triangular PBIBD with corresponding parameters. Using the theorem that dual design of balanced incomplete block design with special parameters becomes triangular PBIBD, we can design block complete diallel cross without finding new triangular PBIBD. In this paper, we provided the plan and design satisfying such block complete diallel crosses.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.27 no.3
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• pp.235-237
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• 1982

$F_2$ progenies from the crosses between 'Caribo' monosomic lines and 'Diplomat' revealed significant differences in plant height in 7 $F_2$ populations. Well known effects of monosomic constritution of group 2 homoeologues and chromosome 5A sufficiently well explain reduced or increased plant height in these crosses respectively. Minor gene effects were recognized from 'Diplomat' chromosomes 3B, 6A and 7A and interpreted to explain or to contribute to genetic control of the rather small differences in plant height between cv. 'Caribo' and 'Diplomat'.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.6
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• pp.532-538
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• 1990

This experiment was carried out to establish the efficiency of crop breeding on comparison of combination methods of single, 3-way, and double crosses and combination order of 4 winter wheat which were different in origin, source, and plant types, On comparison of 4 crossing modes, there appeared the earliest heading and the highest grain yield in double cross, and decreased in 3-way. single crosses. and parents in order, There showed the significant mean squares of GCA and SCA in 4${\times}$4 diallel analysis for grain yield and yield components. Grumil and Bezostaya 1 exhibited highest GCA effect of grain yield which appeared the actual highest grain yield. There appeared the highest SCA-effect in F$_1$ (Eunpamil/Bezostaya 1) showing 4.22. Of the 3 double crosses there exhibited the highest grain yield in F$_1$ (Grumil/Eunpamil/ /Lanota/Bezostaya 1). Two single crosses for this double cross ---F$_1$ (Grumil/Eunpamil) and F$_1$ (Lancota/Bezostaya 1) --- do not revealed directly for this yield, but combined each other by chromosome switch as combination of F$_1$ (Grumil/Lancota), F$_1$(Grumil/Bezostaya 1), F$_1$(Eunpamil/Lancota) and F$_1$(Eunpamil/Bezostaya 1) which appeared the higher grain yields and SCA-effects. Of the six 3-way crosses. F$_1$ (Lancota/Bezostaya 1/ /Eunpamil) expressed the highest grain yield. Its combinations were F$_1$ (Lancota/Eunpamil) and F$_1$ (Bezostaya 1/Eunpamil) combined by chromosome switch, which its grain yield and SCA-effect were higher.

• International Journal of Industrial Entomology and Biomaterials
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• v.7 no.2
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• pp.209-219
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• 2003

An experiment was initiated to evaluate hybrid vigour in twelve F$_1$ hybrids and seven three-way crosses of multivoltine ${\times}$ bivoltine silkworm between newly evolved multivoltine breed BL67 with productive bivoltine CSR breeds and hybrids. Analysis of variances computed for different characters among F$_1$hybrids and three-way crosses showed highly significant differences among them indicating presence of both additive and non-additive gene actions for the expression of these characters. Among twelve F$_1$ hybrids, two F$_1$ hybrids viz., BL67${\times}$CSR$_4$and BL67${\times}$CSR$_{5}$ have expressed significant heterosis for nine characters and two hybrids viz., BL67${\times}$NB$_4$D$_2$and PM${\times}$NB$_4$D$_2$ for eight characters whereas out of nine three-way crosses, three hybrids viz., BL67${\times}$ (CSR$_3$${\times}$CSR$_{6}$), BL67${\times}$(CSR$_{16}$${\times}$CRS$_{17}$) and BL67${\times}$(CSR$_{18}$ ${\times}$CSR$_{19}$) expressed significant heterosis for eight characters. In the present study, it is observed that the cocoons of two hybrids viz., BL67${\times}$CSR$_4$and BL67${\times}$CSR$_{19}$ were found to be uniform as these hybrids showed lowest CV％ (5.35 and 5.38) among twelve F$_1$ hybrids and seven three way crosses between multivoltine ${\times}$ bivoltine hybrids. Four F$_1$ hybrids viz., BL67${\times}$CSR$_4$, BL67${\times}$CSR$_{5}$, BL67${\times}$ (CSR$_3$${\times}$CSR$_{6}$), BL67${\times}$(CSR$_{16}$${\times}$CRS$_{17}$) and BL67${\times}$(CSR$_{18}$ ${\times}$CSR$_{19}$) showed superiority in expressing hybrid vigour and are considered as best heterotic hybrids for commercial exploitation.ion.ation.ion.ation.ion.

• Current Research on Agriculture and Life Sciences
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• v.4
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• pp.114-118
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• 1986

The study was conducted to find out the gene effects on litter size and birth weights in mice with 362 progenies from full-diallel crosses of four lines of BALB/c, CBA, C3H and C57BL. The progenies were farrowed at the Experimental Animal Farm, College of Agriculture, Kyungpook National University in November, 1984, and data were analyzed into general combining ability, specific combining ability and reciprocal effects with Griffing's model. General combining ability effects estimated in line-crosses were -0.4163~0.3337 for litter size and -0.0356~0.0894 for birth weights. However, no significant differences were observed in general combining ability effects on litter size and birth weights. Specific combining ability effects estimated in line-crosses were -1.0388~1.7913 for litter size and -0.1144~0.1343 for birth weights. However, the specific combining ability effects for litter size and birth weights appeared to be insignificant. The reciprocal effects, which appeared to be significant, were -2.26 from BALB/c ${\times}$ C3H, 1.84 from CBA ${\times}$ C57BL and -1.50 from BALB/c ${\times}$ CBA for litter size. For birth weights, the reciprocal effects were estimated -0.26 from CBA ${\times}$ C57BL, 0.15 from BALB/c ${\times}$ CBA and -0.15 from BALB/c ${\times}$ C57BL.

• Horticultural Science & Technology
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• v.28 no.4
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• pp.618-626
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• 2010

Matroclinal inheritance of morphological characters in interspecific crosses of Rosa spp. can be influenced by cytoplasmic inheritance, apomixis, and asynaptic heterogamy. In asynaptic heterogamy, which is often observed from interspecific crosses of Rosa sect. $Caninae$, the polyploidy of the seed parent (especially for 5x=35) is recovered in the progeny through the pollens that include only a set of bivalents (x=7) and egg cells that contain a set of bivalents (x=7) and other univalents (3x=21). In this study, we investigated the causes of matroclinal offsprings observed from reciprocal crosses of tetraploid cut rose cultivars ($Rosa$ $hybrida$ L.) by analyzing EST-SSR marker distribution in the progeny populations. From EST-SSR marker analysis of eight offsprings per six reciprocal crosses among six cultivars, cases of cytoplasmic inheritance were not observed. Apomixis was also very rare as compared to the reports on interspecific crosses of sect. $Caninae$; only one apomitic plant was identified from the cross 'Redtem' ${\times}$ 'Red Sandra'. Although a clear-cut pattern of asynaptic heterogamy was not found, cultivar-specific marker transmission skewed to seed parent in four cultivars implied that genetic inheritance can be highly influenced by the seed parent depending on crosses among cut rose cultivars; especially, 10 out of 11 alleles specific to 'Yellow King' distributed in progenies at higher ratios when the cultivars were crossed as the seed parent.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.29 no.1
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• pp.1-10
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• 1984

The main objective of this experiment was to investigate the selection efficiency for clear rice by the application of the wx-carrier technique in rice. Twelve semi-dwarf waxy lines were bred through backcrosses to the two recurrent semi-dwarf parents, IR667 and IR1317, utilizing six different waxy cultivars as waxy donor parent. These waxy lines were crossed to three clear non-waxy varieties, IR24, Suweon 287 and Suweon294. Their F$_3$ seeds were separated into waxy and non-waxy and the clearness of non-waxy grains were counted. The results are summarized as follows: l. Mean clearness per plant for twelve waxy lines ranged from 3.7% to 78.9% at the 35 days after heading. It was higher in the lines which utilized IR 1317 as recurrent parent and it was lower in the lines which utilized IR667 as recurrent parent. Mean clearness per plant for recurrent parent, IRl317 and IR667 were 47.6% and 5.6% respectively. The clear non-waxy parents; Suweon287, IR24 and Suweon294 showed 83.7% 80.5% and 73.5% clearness respectively. 2. Mean clearness of F$_3$ seeds of the crosses between different waxy parents and IR24, Suweon 294 and Suweon 287 ranged 16.7-73.9%, 21.9-42.9% and 10.6-26.9%, respectively. IR24 crosses showed the highest mean clearness. 3. Highly positive correlation was found between the clearness of F$_3$ seeds of Suweon 287 crosses and those of Suweon294. 4. Significant differences were observed in mean clearness of F$_3$ seeds of the crosses between the different waxy lines, which was bred through the same number of backcrosses to the same recurrent parent, and a clear non-waxy parent. Crosses of IR1317 recurrent parent showed higher mean clearness than those of IR667 recurrent parent. 5. In some crosses, clearness was higher in homo-non-waxy than in hetero-non-waxy, but, in other crosses it was higher in hetero-non-waxy. Thus no distinct pattern in the segregation of clearness was observed along the homo-non-waxy or hetero-non-waxy. 6. From the results it was concluded that, the selection efficiency for the clear rice can be improved by choosing the proper waxy parent, as well as proper recurrent parent under the wx-carrier technique.

• 한국데이터정보과학회:학술대회논문집
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• 2006.11a
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• pp.144-144
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• 2006

• Proceedings of the Korean Statistical Society Conference
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• 2002.05a
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• pp.165-170
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• 2002

Sometimes we have two groups of inbred lines and there are only interest in gca comparisons within group($p_{1}$) and group($p_{2}$) and not between two groups. For example, suppose there two Lab, each of the 2 Labs have obtained the best lines. For this purpose we now give a method of constructing block designs for diallel cross experiments and we will explain how to calculate efficiency. Then we show the efficiencies in the table.

• International Journal of Industrial Entomology and Biomaterials
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• v.25 no.2
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• pp.171-174
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• 2012

In order to study the feasibility of utilizing bivoltine foundation cross (FC2) males of the silkworm as male components with Pure Mysore (PM), six foundation crosses viz,CSR2 x CSR27, CSR27 x CSR2, CSR27 x CSR50, CSR50 x CSR27, CSR2 x CSR50 and CSR50 x CSR2 along with CSR2 pure breed were assessed for performance of parental crop,grainage, rearing and reeling performance. The foundation crosses exhibited better performance than CSR2 as a parental crop and male component which resulted in higher egg recovery. Though there was not much difference between PM crossed with FC2 and CSR2 males pertaining to important bioassay parameters, PM x CSR2 exhibited superiority in reeling traits particularly with reelability and raw silk %. This study reveals that FC2 seed cocoons can be utilized during exigency when there is a dearth for CSR2 seed cocoons but not regularly.