Abstract
Effects of shoot vigor on the development of transmitting tissue (TT) and pollen tube growth in pistils of Pione grapevines (a hybrid of Vitis vinifera L. and V. labrusca L., tetraploid) were investigated anatomically. Shoot vigor was reduced by root zone restriction and pre-bloom shoot tipping, and was increased by severe winter pruning and application of high concentration fertilizer. The TT development in long and short shoots of the vines without root restriction was also compared. In cross sections of the upper and middle ovaries, a thicker TT and more pollen tubes were found in root zone-restricted vines compared to unrestricted vines. Also, thicker TT and more pollen tubes were observed in less vigorous, short shoots of unrestricted vines. Tipping did not improve the TT development. However, spur pruning and application of high concentration fertilizer to root zone-restricted vines did not inhibit the TT development and pollen tube growth, though shoots grew vigorously. From these results, we conclude that promoted TT development in less vigorous shoots of Pione grapevines allows for more pollen tubes to penetrate into the ovary, resulting in the production of acceptable clusters with a sufficient number of seeded berries.
| Original language | English |
|---|---|
| Pages (from-to) | 105-110 |
| Number of pages | 6 |
| Journal | Vitis |
| Volume | 40 |
| Issue number | 3 |
| Publication status | Published - 2001 |
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Keywords
- Pistil
- Pollen tube
- Tetraploid grape
- Transmitting tissue
ASJC Scopus subject areas
- Horticulture
Cite this
Effect of shoot vigor on the development of transmitting tissue and pollen tube growth in pistils of tetraploid grape, cv. Pione. / Okamoto, G.; Tada, H.; Suyama, A.; Hayashi, Y.; Hirano, Ken.
In: Vitis, Vol. 40, No. 3, 2001, p. 105-110.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effect of shoot vigor on the development of transmitting tissue and pollen tube growth in pistils of tetraploid grape, cv. Pione
AU - Okamoto, G.
AU - Tada, H.
AU - Suyama, A.
AU - Hayashi, Y.
AU - Hirano, Ken
PY - 2001
Y1 - 2001
N2 - Effects of shoot vigor on the development of transmitting tissue (TT) and pollen tube growth in pistils of Pione grapevines (a hybrid of Vitis vinifera L. and V. labrusca L., tetraploid) were investigated anatomically. Shoot vigor was reduced by root zone restriction and pre-bloom shoot tipping, and was increased by severe winter pruning and application of high concentration fertilizer. The TT development in long and short shoots of the vines without root restriction was also compared. In cross sections of the upper and middle ovaries, a thicker TT and more pollen tubes were found in root zone-restricted vines compared to unrestricted vines. Also, thicker TT and more pollen tubes were observed in less vigorous, short shoots of unrestricted vines. Tipping did not improve the TT development. However, spur pruning and application of high concentration fertilizer to root zone-restricted vines did not inhibit the TT development and pollen tube growth, though shoots grew vigorously. From these results, we conclude that promoted TT development in less vigorous shoots of Pione grapevines allows for more pollen tubes to penetrate into the ovary, resulting in the production of acceptable clusters with a sufficient number of seeded berries.
AB - Effects of shoot vigor on the development of transmitting tissue (TT) and pollen tube growth in pistils of Pione grapevines (a hybrid of Vitis vinifera L. and V. labrusca L., tetraploid) were investigated anatomically. Shoot vigor was reduced by root zone restriction and pre-bloom shoot tipping, and was increased by severe winter pruning and application of high concentration fertilizer. The TT development in long and short shoots of the vines without root restriction was also compared. In cross sections of the upper and middle ovaries, a thicker TT and more pollen tubes were found in root zone-restricted vines compared to unrestricted vines. Also, thicker TT and more pollen tubes were observed in less vigorous, short shoots of unrestricted vines. Tipping did not improve the TT development. However, spur pruning and application of high concentration fertilizer to root zone-restricted vines did not inhibit the TT development and pollen tube growth, though shoots grew vigorously. From these results, we conclude that promoted TT development in less vigorous shoots of Pione grapevines allows for more pollen tubes to penetrate into the ovary, resulting in the production of acceptable clusters with a sufficient number of seeded berries.
KW - Pistil
KW - Pollen tube
KW - Tetraploid grape
KW - Transmitting tissue
UR - http://www.scopus.com/inward/record.url?scp=0034817536&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034817536&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0034817536
VL - 40
SP - 105
EP - 110
JO - Vitis - Journal of Grapevine Research
JF - Vitis - Journal of Grapevine Research
SN - 0042-7500
IS - 3
ER -