Indian Society of Genetics & Plant Breeding

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Studies on anthesis and flowering pattern in mUlberry germplasm

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Mulberry (Morus sp.) dioecious (male) and monoecious
germplasm accessions of different geographical origin
showed anthesis period between January and April.
Indigenous and exotic accessions of Asian countries
flowered during January to February except few accessions
from Japan, China, Burma and Turkey which flowered
during March and April months, while rest flowered during
March to April. The number of catkins per axis was
more in exotic accessions with small size and less number
of florets compared to indigenous one. Dehiscence of
anther was highest during 10.00-11.30 AM and 3.00-4.00
PM in the day time, while the event occurred throughout
the day and was restricted to 1-4 days (Indigenous 1- 3;
Exotic 2-4 days) for a single catkin. The size of the
pollen showed variation with two germpores irrespective
of its origin, except in few cases where the germpores
were 3-4. In vitro germination of pollen showed significant
variation and did not relate with the origin of the accessions
but declined with the increase of storage time.
 

Keywords: Mulberry germplasm, anthesis, flowering

Info

Year: 2004
Volume: 64
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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