Download Fruit Component and Seedling Progeny Analysis of Komadan

FRUIT COMPONENT AND SEEDLING
PROGENY ANALYSIS OF
KOMADAN COCONUT TYPES
\.
By
Po MANJU.
MoSc. (Ago)
THESIS
submitted in partial fulfilment of
the requirement for the degree
DOCTOR OF PHILOSOPHY
Faculty of Agriculture
Kerala Agricultural University
Department of Plant Breeding
COLLEGE OF AGRICULTURE
Vellayani, Thiruvananthapuram
1992
..
CERTIFI CATE
Cerotit'ied
component
and
coconut
s::eedling
is::
types::"
independently
s::upe."vis::ion
Ibas::is::
Cor.
as::s::ociates::hip
Vellayani,.
14-1-1992.
that
by
and
a
Smt.that
awa.-.d
the
to
this::
thes::is::
\\r-ogeny
roecor-d
P.
it.
analys::is::
ot'
MANJU
has::
oC
not
any
ot'
my
degr-ee,.
done
guidance
p."evious::ly
t
Komadan
wor-k
roes::ear-ch
under.
"Fr-ui
entitled
and
t'o.--med
the
0."
t'ellows::hip
he.--.
D
R. Gopimony,.
Chair-man
Advis::oroy
Pr-ot'es::s::oro
Conununication
Manputhy,.
Conmdttee,.
oC
Plant
Broeeding,.
Centroe,.
T.~ichu.",
ABSTRACT
The
un~avel
the
poP\1la~
in
~elation
with
the
and
Cent~al
study ~evealed
and numbe~
indicating
combined
palms,
theeby
occupying
egading
palms
shades
33 pe
numbe~
had
of
distinction
system.
shades
in
palm
had
high
olive
and
b~own
as a sepa~ate
natue
palms
~~oup.
NCD
palms
70 pe~ cent
nuts
the
Among
tJCT and
All the Komadan
nuts of g~een shade and NCD
advance
pollinating
between
of b~own while
and
of nuts pe~
to high genetic
cent were of self
palm
spadices
of a-dditive genes.
pollination
of Komadan
mothe~
and
Numbe~
showed
types
the
of
of bunches
with mode~ate
position
g~een,
seedlin~
of female flowe~s pe~ bunch
a
of diffe~ent
in
gene~ations
and
component
fo~ majo~ity
the p~edominance
Komadan
Komadan,
Ke~ala,
th~ee
that the Komadan
of nuts pe~ palm pe~ yea~.
he~itability
of
to
"
especially
yea~
nuts
f~uit
NCD th~ough
type,
~egion
its
view
with a
coconut
by compa~ing
supe~io~ity
cha~acte~s
of a
T~avanco~e
analysis.
significant
pe~
status
genetic
The
numbe~
study was unde~taken
to its o~igin
tJCT
p~ogeny
p~esent
had
of
had
tJCT
va~ying
indicating
the
Komadan
characters
except
thickness
distinct
of
types were superior
of
husk
and husk/nut
type regarding
thickness
the Komadan generations
for
of
majority
an
occupied
kafa-Niu
vai
unhusked
behaved
as
towards
a
One or the other
of meat.
Komadan
with
hypothesis
depression
by significant
in selfed
Komadan
content,
NCD
types
on
a
better
Niu
clear
weight
of
...
Inbreeding
weight
It
ratio.
oil
between NCD and WCT based
generations
nut.
indicated
nut,
characters.
Introgression
through
of
was found to be on par with
the seednut
area midway
progt'ession
as
diameter
polar
seednut
to WCT in all
was noticed
reduction
nuts.compared
in embryo and
to open pollinated
there was no inbreeding
depression
NCD
in WCT and
kernel
In
nuts.
indicating
a high
degree of homozygosity.
The
germination
seednuts
compared
Regarding
a
distinct
Number
Komadan.
of
Komadan
showed
early
to WCT and NCD.
seedling
characters,
Komadan
behaved
with split
This type was superior
leaves was
also
to WCT for seedling
as
NCD.
type for total leaf area over both WCT and
of' seedlings
index also.
types
more
in
vigour
of
Estimation
seedlings
quality
showed ~hat
were prepotent
palms
prepotency
on
based
recovery
40 to 60 per cent
of
of
Komadan
were
where as the same in WCT and NCD
only about 20 per cent.
Analysis
that
of
petiole
71 to 82 per cent of seedlings
per cent
wider
moderate
showed
generations
of WCT seedlings~ad
variations
in
petiole
seedlings
colour of
among the three
brown colour
different
showed
Komadan
97
(bronze)
shades of green
noticed
colour were
in
and
NCD
seedlings.
It
maintained
respect
copra,
can
its
concluded
be
genetic
identity
to economically
important
and oil content
seedlings
which
inturn reflects
isolated
through
type
generations
with
vlz.
characters
its prepotent
and maintenance
inter
seed gardens
over
Komadan
the
and also in the recovery
The collection
germplasm
that
se crossing
quality
nature.
of ,typical
Komadan
and. development
for large scale production
seedli-ngs are suggested
of
kernel,
as future line of work.
of
of
Komadan