Late-acting self-incompatibility: a barrier to self-fertilization in sunnhemp (Crotalaria juncea L.)
| Autor: | H. R. Bhandari, Jiban Mitra, Arroju Anil Kumar, H.K. Sharma, Maruthi Rangappa Thimmaiah, Shashi Bhushan Choudhary, P. G. Karmakar |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Gynoecium biology Callose Stamen food and beverages Allogamy Selfing Plant Science Horticulture biology.organism_classification 010603 evolutionary biology 01 natural sciences chemistry.chemical_compound chemistry Botany Genetics Crotalaria juncea Pollen tube Ovule Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Euphytica. 214 |
| ISSN: | 1573-5060 0014-2336 |
| DOI: | 10.1007/s10681-017-2096-9 |
| Popis: | In search of causal factors underlying perceived allogamy in sunnhemp (Crotalaria juncea L.), we investigated the breeding system and pollen–pistil interaction. Floral biology study in the species established Fabaceae type hermaphrodite zygomorphic flower with dimorphic anthers. Study of the breeding system revealed preferential success of allogamy despite delayed autonomous selfing mechanism characteristically prevailing in the species. Pollen–pistil interaction study in selfed and crossed pistils revealed significant differences in pollen tube growth rates inside the pistil. Further, in self-pollinated pistils callose formation observed at and around nucellus cells suggesting the late-acting type of self-incompatibility mechanism in the species. To the best of our knowledge, this is the first scientific communication underscoring the prevalence of self-incompatibility mechanism in sunnhemp. |
| Databáze: | OpenAIRE |
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