Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L)
The objectives of this study were to elucidate the physiological basis of selfincompatibility system and the floral morphological polymorphism in carambola (Averrhoa carambola L.). Within 30 minutes after pollination, pollen degradation and hydration commenced on the stigma surface. Pollen tubes...
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| Format: | Thesis |
| Language: | English English |
| Published: |
1998
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| Online Access: | http://psasir.upm.edu.my/id/eprint/10417/1/FP_1998_7_A.pdf |
| _version_ | 1796967932444540928 |
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| author | Fushimi, Nobuhiko |
| author_facet | Fushimi, Nobuhiko |
| author_sort | Fushimi, Nobuhiko |
| collection | UPM |
| description | The objectives of this study were to elucidate the physiological basis of selfincompatibility
system and the floral morphological polymorphism in carambola
(Averrhoa carambola L.).
Within 30 minutes after pollination, pollen degradation and hydration
commenced on the stigma surface. Pollen tubes subsequently emerged from colpal
furrow and crawled into apertures of vesicles. The pollen tubes reached the base of
the transmitting tract of the style on legitimate pollinations in pin and thrum morphs at 8.0 h after pollinations. Pollen tubes were uniformly inhibited at the middle of the
style in pin illegitimate pollinations, however, tubes occasionally penetrated to the
base of the transmitting tract of the style. futhrum illegitimate pollinations, tubes
were inhibited at the junction between stigmatic and stylar tissues. Result of
illegitimate pollination confirmed the partial loss of incompatibility in pin as
opposed to the strong incompatibility in thrum as shown by both fluorescence
microscopic observation and the field controlled pollinations study. Ripen fruits
from pin illegitimate pollinations were significantly smaller and contained less seed
compared to legitimate pollinations.
Carambola flower consisted of 5 rose-pink sepals, a pistil, 5 stamens and 5
staminoids. Pistil length was significantly longer in pin than in thrum morphs. On
the other hand, the stamen length was significantly longer in thrum than in pin
morphs. Pollen grain shape of pin and thrum morphs was oblate spherical and
tricolporate. Pollen diameter was significantly larger in thrum than in pin morphs.
Foveolate pattern of pollen exine sculpturing was more intense in pin than in thrum
morphs. Each of the five stylar tissues terminated in a capitate stigma. The stigma
receptive surface surrounded the stylar tip, except for a strip along the abaxial part
between the middle and base of stylar tissues. Vesicle was a dewdrop-shaped cell.
Stigma and vesicles sizes were significantly greater in pin than in thrum morphs.
Result of measurements of the various floral morphological parts revealed highly
significant variations even among the various clones within the same morphs. |
| first_indexed | 2024-03-06T07:21:06Z |
| format | Thesis |
| id | upm.eprints-10417 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:21:06Z |
| publishDate | 1998 |
| record_format | dspace |
| spelling | upm.eprints-104172011-04-11T02:15:10Z http://psasir.upm.edu.my/id/eprint/10417/ Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L) Fushimi, Nobuhiko The objectives of this study were to elucidate the physiological basis of selfincompatibility system and the floral morphological polymorphism in carambola (Averrhoa carambola L.). Within 30 minutes after pollination, pollen degradation and hydration commenced on the stigma surface. Pollen tubes subsequently emerged from colpal furrow and crawled into apertures of vesicles. The pollen tubes reached the base of the transmitting tract of the style on legitimate pollinations in pin and thrum morphs at 8.0 h after pollinations. Pollen tubes were uniformly inhibited at the middle of the style in pin illegitimate pollinations, however, tubes occasionally penetrated to the base of the transmitting tract of the style. futhrum illegitimate pollinations, tubes were inhibited at the junction between stigmatic and stylar tissues. Result of illegitimate pollination confirmed the partial loss of incompatibility in pin as opposed to the strong incompatibility in thrum as shown by both fluorescence microscopic observation and the field controlled pollinations study. Ripen fruits from pin illegitimate pollinations were significantly smaller and contained less seed compared to legitimate pollinations. Carambola flower consisted of 5 rose-pink sepals, a pistil, 5 stamens and 5 staminoids. Pistil length was significantly longer in pin than in thrum morphs. On the other hand, the stamen length was significantly longer in thrum than in pin morphs. Pollen grain shape of pin and thrum morphs was oblate spherical and tricolporate. Pollen diameter was significantly larger in thrum than in pin morphs. Foveolate pattern of pollen exine sculpturing was more intense in pin than in thrum morphs. Each of the five stylar tissues terminated in a capitate stigma. The stigma receptive surface surrounded the stylar tip, except for a strip along the abaxial part between the middle and base of stylar tissues. Vesicle was a dewdrop-shaped cell. Stigma and vesicles sizes were significantly greater in pin than in thrum morphs. Result of measurements of the various floral morphological parts revealed highly significant variations even among the various clones within the same morphs. 1998 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/10417/1/FP_1998_7_A.pdf Fushimi, Nobuhiko (1998) Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L). Masters thesis, Universiti Putra Malaysia. Trees - Pollination Carambola Pollination English |
| spellingShingle | Trees - Pollination Carambola Pollination Fushimi, Nobuhiko Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L) |
| title | Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L) |
| title_full | Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L) |
| title_fullStr | Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L) |
| title_full_unstemmed | Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L) |
| title_short | Studies on Incompatibility Pollination and Floral Morphological Polymorphism of Carambola (Averrhoa Corambola L) |
| title_sort | studies on incompatibility pollination and floral morphological polymorphism of carambola averrhoa corambola l |
| topic | Trees - Pollination Carambola Pollination |
| url | http://psasir.upm.edu.my/id/eprint/10417/1/FP_1998_7_A.pdf |
| work_keys_str_mv | AT fushiminobuhiko studiesonincompatibilitypollinationandfloralmorphologicalpolymorphismofcarambolaaverrhoacorambolal |