Abstract
This experiment was conducted to clarify the developmental process of flower clusters produced on the leaf axils. The phytomer concept was introduced to classify both axillary racemes and a terminal raceme on each shoot of a plant. Soybean cultivar, Tachisuzunari was planted on June 25, 1979. The treatments were three levels of plant population (D1: 3, 333 plants/a, D2:1, 667 plants/a, D3:833 plants/a) and two levels of nitrogen application (N1: 0 kgN/a, N2: 0.3 kgN/a). The experimental design was 3×2factorial experiment with two replications. The results were summarized as follows: 1. Flower clusters are classified into a terminal raceme, primary racemes, secondary racemes and tertiary racemes according to developmental order on each shoot. There is a regularity of the developmental pattern of these racemes from bottom to top on the shoot. This pattern is related to the co-growing relationship which can be observed in the branching of the soybean (Fig. 1). 2. The number of terminal and primary racemes per plant is closely related to the development of branches, while the number of secondary and tertiary racemes depends upon the amount of vegetative growth (Fig. 2 and Table l). 3. First flower of primary racemes on the shoot appears at around the lowest nodes which do not produce the vegetative branch. Flowers of primary racemes appear acropetally and up to the terminal raceme. Flowering pattern of secondary racemes is the same as the primary racemes. Plant population and nitrogen application do not affect this flowering pattern in a plant (Fig. 3). 4. The number of flowers per primary raceme is not affected by plant population, while the number of flowers per secondary and tertiary racemes is affected by these treatments (Table 2). 5. There may be two critical stages in yield determining process of the soybean cultivar Tachisuzunari. One is the period during phytomer 5 to 8 visible stages, which is the transitional stage from the vegetative growth to the reproductive growth. The other is the bloom period of secondary racemes, which is the transitional stage for physiological adjustment toward the grain filling.
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Claims 13
Claim · model-written summary
Flower clusters follow a regular developmental order from terminal to tertiary racemes.
- Taxon
- Soybeans
Glycine maxt0 - Organ / stage
- Flower clusterse0
- Outcome
- regularity of the developmental patterne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flower clusters are classified into a terminal raceme, primary racemes, secondary racemes and tertiary racemes according to developmental order on each shoot. There is a regularity of the developmental pattern of these racemes from bottom to top on the shoot”
t0“Soybeans”
Claim · model-written summary
The raceme pattern was related to the branching co-growth relationship.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- branchinge0
- Outcome
- co-growing relationshipe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This pattern is related to the co-growing relationship which can be observed in the branching of the soybean”
Claim · model-written summary
Terminal and primary raceme numbers were closely related to branch development.
- Taxon
- SoybeansGlycine maxt0
- Organ / stage
- branchese0
- Outcome
- number of terminal and primary racemes per plante0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of terminal and primary racemes per plant is closely related to the development of branches”
t0“Soybeans”
Claim · model-written summary
Secondary and tertiary raceme numbers depended on vegetative growth.
- Taxon
- SoybeansGlycine maxt0
- Organ / stage
- vegetative growthe0
- Outcome
- number of secondary and tertiary racemese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of secondary and tertiary racemes depends upon the amount of vegetative growth”
t0“Soybeans”
Claim · model-written summary
Primary racemes first flower near the lowest nodes without vegetative branches.
- Taxon
- SoybeansGlycine maxt0
- Organ / stage
- primary racemese0
- Outcome
- First flower of primary racemes on the shoot appears at around the lowest nodese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“First flower of primary racemes on the shoot appears at around the lowest nodes which do not produce the vegetative branch”
t0“Soybeans”
Claim · model-written summary
Primary raceme flowers appear acropetally up to the terminal raceme.
- Taxon
- SoybeansGlycine maxt0
- Organ / stage
- primary racemese0
- Outcome
- appear acropetally and up to the terminal racemee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flowers of primary racemes appear acropetally and up to the terminal raceme”
t0“Soybeans”
Claim · model-written summary
Secondary racemes share the primary raceme flowering pattern.
- Taxon
- SoybeansGlycine maxt0
- Organ / stage
- secondary racemese0
- Outcome
- Flowering pattern of secondary racemes is the same as the primary racemese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flowering pattern of secondary racemes is the same as the primary racemes”
t0“Soybeans”
Claim · model-written summary
Plant population did not change the flowering pattern.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Plant populatione0
- Outcome
- flowering patterne0
- Direction
- do not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant population and nitrogen application do not affect this flowering pattern in a plant”
t0“Soybeans”
Claim · model-written summary
Nitrogen application did not change the flowering pattern.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- nitrogen applicatione0
- Outcome
- flowering patterne0
- Direction
- do not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant population and nitrogen application do not affect this flowering pattern in a plant”
t0“Soybeans”
Claim · model-written summary
Plant population did not change flower number per primary raceme.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- plant populatione0
- Outcome
- number of flowers per primary racemee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of flowers per primary raceme is not affected by plant population”
t0“Soybeans”
Claim · model-written summary
The treatments affected flower number per secondary and tertiary raceme.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- these treatmentse0
- Outcome
- number of flowers per secondary and tertiary racemese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of flowers per secondary and tertiary racemes is affected by these treatments”
t0“Soybeans”
Claim · model-written summary
Phytomer stages 5 to 8 may be a critical yield-determining period.
- Taxon
- soybeanGlycine maxe0
- Material
- Tachisuzunarie0
- Organ / stage
- phytomer 5 to 8 visible stagese0
- Outcome
- critical stages in yield determining processe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There may be two critical stages in yield determining process of the soybean cultivar Tachisuzunari. One is the period during phytomer 5 to 8 visible stages”
Claim · model-written summary
Secondary raceme bloom may be a critical yield-determining period.
- Taxon
- SoybeansGlycine maxt0
- Organ / stage
- bloom period of secondary racemese0
- Outcome
- transitional stage for physiological adjustment toward the grain fillinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The other is the bloom period of secondary racemes, which is the transitional stage for physiological adjustment toward the grain filling”
t0“Soybeans”
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