Abstract
The inheritance of the types of young plants which are prominent at the younger stage of development in wheat has been studied, with particular reference to some of the adult characters, in 4 successive generations from F1 to F4 of Hokuriku No. 13 with Saitama No. 27 crossing from 1938 to 1941.The types of young plants were classified into five or six classes, T1-T5 or T6, from prostrate to erect by observation (c. f. Fig. 1).The young plant type was intermediate in F1 between both parents. The distribution curve on the plant types of 390 F2 plants fairly resembled a normal curve as shown in Table 1. In 110 F3 lines descended from each class in F2 generation, various mean values (Type-values), which express the types of young plants in each line numerically, were observed as shown in Table 3. The result may be explained by two heteromeric major genes E1 and E2, which are imperfect in dominancy (c. f. Table 4-6 and Fig. 2).In F4 generation, however, 17 families derived from each of 9 genotypes in F3 generation were grown, and the segregation was found more complicated than in F3 (c. f. Table 7). From this result it was assumed that the third gene E3, the effect of which being considerably weaker than the former two, should concern to the genic constitution of the young plant types. All F4 lines were successfully classified into 27 genotypes, which should theoretically result from the segregation of the three gene pairs (c. f. Table 8-10).It may be concluded, therefore, that the types of young plants are controlled by three major heteromeries.
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Claims 8
Claim · model-written summary
The young plant type was intermediate in F1 between both parents of the Hokuriku No. 13 with Saitama No. 27 cross.
- Taxon
- wheat
Triticum aestivumt0 - Material
- Hokuriku No. 13 with Saitama No. 27e0
- Outcome
- young plant typee1
- Direction
- intermediatee1
- Comparator
- both parentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e0“Hokuriku No. 13 with Saitama No. 27 crossing”
e1“The young plant type was intermediate in F1 between both parents”
Claim · model-written summary
The distribution of plant types among 390 F2 plants fairly resembled a normal curve.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- distribution curve on the plant typese2
- Value
- 390 F2 plantse2
- Qualifier
- fairly resembled a normal curvee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e2“The distribution curve on the plant types of 390 F2 plants fairly resembled a normal curve”
Claim · model-written summary
Mean values of plant types in F3 lines descended from each F2 class varied.
- Taxon
- wheatTriticum aestivumt0
- Material
- F3 linese3
- Outcome
- mean values (Type-values)e3
- Qualifier
- variouse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e3“In 110 F3 lines descended from each class in F2 generation, various mean values (Type-values), which express the types of young plants in each line numerically, were observed”
Claim · model-written summary
The young plant type may be explained by two heteromeric major genes, E1 and E2, which are imperfect in dominance.
- Taxon
- wheatTriticum aestivumt0
- Gene
- two heteromeric major genes E1 and E2e4
- Outcome
- The resulte4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e4“The result may be explained by two heteromeric major genes E1 and E2, which are imperfect in dominancy”
Claim · model-written summary
The segregation of the young plant type in F4 was more complicated than in F3.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- segregatione5
- Direction
- more complicatede5
- Comparator
- F3e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e5“the segregation was found more complicated than in F3”
Claim · model-written summary
A third gene, E3, with a weaker effect than E1 and E2, is assumed to concern the genic constitution of the young plant types.
- Taxon
- wheatTriticum aestivumt0
- Gene
- the third gene E3e6
- Outcome
- genic constitution of the young plant typese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e6“the third gene E3, the effect of which being considerably weaker than the former two, should concern to the genic constitution of the young plant types”
Claim · model-written summary
All F4 lines were successfully classified into 27 genotypes.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- F4 lines were successfully classifiede7
- Value
- 27 genotypese7
- Qualifier
- which should theoretically result from the segregation of the three gene pairse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e7“All F4 lines were successfully classified into 27 genotypes, which should theoretically result from the segregation of the three gene pairs”
Claim · model-written summary
The types of young plants are concluded to be controlled by three major heteromeries.
- Taxon
- wheatTriticum aestivumt0
- Gene
- three major heteromeriese1
- Outcome
- the types of young plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in wheat”
e1“It may be concluded, therefore, that the types of young plants are controlled by three major heteromeries”