Studies on floral biology and breeding behaviour of kalmegh (Andrographis paniculata nees) and safed musli (Chlorophytum borivilianum santapau and fernandes)
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Date
2007
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Publisher
CCSHAU
Abstract
The present investigation was carried out to study the floral
biology and breeding behaviour in kalmegh (Andrographis paniculata)
and safed musli (Chlorophytum borivilianum). The research work was
conducted during May 2006-Jan 2007 at CCS Haryana Agricultural
University, Hisar.
In Andrographis paniculata studies on floral biology showed that,
flowering was at low rate initially during October, gradually increased
to peak in November followed by cessation during mid December.
Inflorescence is racemes lax. Floral formula is:. The flower bud from
visible stage to come to full bloom took 11-12 days with a flowering
duration of about 95 days. More than 74 per cent floral buds opened
between 8.00-10.00 a.m. anther dehiscence occurred in
synchronization with flower opening. Pollen viability at the time of
flower opening by acetocarmine test was found to vary from 79-83 per
cent. Pollination experiments revealed the self-pollination or
self-compatibility breeding system in Andrographis paniculata, However
possibility of cross-pollination to a certain extent could not be ruled
out.
In Chlorophytum borivilianum studies on floral biology and
breeding behaviour showed that the inflorescence was raceme. The
floral formula is:. The flower opening was asynchronous. The flower
bud took 7-8 days to come to bloom with the flowering duration of
about 21 days. More than 64 per cent of the flower buds opened
between 9.00-10.00 a.m. Pollen viability by acetocarmine test at the
time of flower opening was found vary from 84-88 per cent. It could be
established by pollination experiments that safed musli is a cross
fertilizing species.
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Keywords
Kalmegh, Safed musli, Flower, Breeding behaviour, Flower structure, Receptivity, Inflorescence, Pollination, Anthesis