Late-acting self-incompatibility: a barrier to self-fertilization in sunnhemp (Crotalaria juncea L.)

Late-acting self-incompatibility: a barrier to self-fertilization in sunnhemp (Crotalaria juncea L.)

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 breedi...

Full description

Saved in:
Bibliographic Details
Published in:Euphytica Vol. 214; no. 2; pp. 1 - 13
Main Authors: Rangappa Thimmaiah, Maruthi, Choudhary, Shashi Bhushan, Sharma, Hariom Kumar, Kumar, Arroju Anil, Bhandari, Hemraj, Mitra, Jiban, Karmakar, Pran Gobinda
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-02-2018
Springer
Springer Nature B.V
Subjects:
Anthers
Beans
Biomedical and Life Sciences
Biotechnology
Breeding
Cross-fertilization
Crotalaria juncea
Fertilization
Fertilizers
Flowers & plants
Growth rate
Incompatibility
Legumes
Life Sciences
Mimosaceae
Pistils
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
Plant Sciences
Pollen
Self-fertilization
Self-incompatibility
Species
L
Sunnhemp
Self-incompatibility
Pollen tube
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0014-2336
1573-5060
DOI:10.1007/s10681-017-2096-9