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"HETEROSIS AND COMBINING ABILITY STUDIES WITH SPECIAL REFERENCE TO OIL CONTENT IN SAFFLOWER (Carthamus tinctorius L.)"

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Title "HETEROSIS AND COMBINING ABILITY STUDIES WITH SPECIAL REFERENCE TO OIL CONTENT IN SAFFLOWER (Carthamus tinctorius L.)"
 
Creator RATNAPARKHI, RAJENDRA D
 
Contributor Deshmukh, Dr. S. N.
Dhumale, Dr. D. B.
Kolhe, Shri R. K.
 
Subject null
 
Description "Safflower (Carthamus tinctorius L.) is one of the most important
ancient oilseed crops of India. It is under cultivation in India from
centuries for its orange red dye extracted from brilliantly coloured
florets. The dye can be used to colour food products, garments,
medicines, cosmetics, toys and artificial decoration. In recent years
safflower has gained importance as a source of healthy edible oil
because of its high percentage of polyunsaturated fatty acids in it
(Linoleic acid 70%) which is useful in reducing cholesterol level in
human blood. Safflower oil contains 55-81% linoleic, 7.42% oleic, 1-
10% stearic. and 1-10% palmitic acid with 90% unsaturated and 10%
saturated fatty acids (Anonymous, 2002). Besides having high
polyunsaturated fatty acids, safflower oil is stable at low temperature
making it suitable for food preparation in frozen dessert, as well as it
can also be used as drying oil in the preparation of paints varnishes,
and for surface coating II is used for preparing roghan meant for
preservation of leather and production of water proof clothes. Charred
oil is used for healing sores and in rheumatism ."
"The present study was undertaken to estimate the amount of
heterosis, heterobeltiosis and useful heterosis for yield, yield
components, oil content and fatty acid profile and also to determine
estimates of general and specific combining ability effects of parents
and crosses for various traits m safflower (Carthamus tinctorius L. )
vi
Ten divergent parents selected from germplasm collect1on of safflower
were crossed in half diallel fashion (excluding reciprocals) during 2007-
08 and field trial was conducted with 55 genotypes (10 parent and 45
crosses) during rabi 2008-09 in randomized complete block design with
three replications along with check AKS 207 at experimental farm of
oilseeds Research Unit, Dr. PDKV, Akola . Observations were recorded
on 19 characters, 1nc!udes seed yield per plant, yield component
characters , oil content and fatty acid profile.
Among parents the highest mean performance for seed yield per
plant was recorded by AKS/GMU 2724 (29.14g) followed by Bh1ma
(27.52g) and JSI 97 (20.14g).
Top five crosses on the bas1s of mean seed yield per plant were
JSF 1 x A 2 (35 .11g), AKS/ S 41 x JSF 1 (34.40g). AKS/ S 41 x A 2
(32 .62g), AKS/S 41 x PBNS 12 (32.20g) and JSF1 x NARI 34 (32 .19g).
The highest mid parental heterosis in desirable direction was
recorded for biological yield per plant 199 33% (AKS/S 41 x JSI 99)
followed by seed yield per planl139.55% (JSI 99 x A 2). For oil content
AKS GMU 2724 x PBNS 12 (11 .64%) recorded the highest heterosis
and for linoleic acid Sagarmuthiyalu x A 2 (8 .33%) was highest.
Moderate to low amount of heterosis was recorded for other
component characters.
Highest heterobeltiosis and standard heterosis for seed yield per
plant was recorded by JSF 1 x A 2 (105.32%) and (45.34%)
respectively followed by AKS /S 41 x JSF 1 (91 .11 %) heterobeltiosis
and (42.40%) standard heterosis and AKS /S 41 x A 2 (81 .22%)
heterobeltiosis and (35.04%) standard heterosis. For yield component
characters moderate to low amount of heterobeltiosis and standard
heterosis were recorded . For oil content and fatty acid profile range of
heterobeltiosis and standard heterosis was low as compared to yield
and yield components For oil content AKS/ GMU 2724 x PBNS 12
recorded highest heterobeltiosis (10 80%) and JSI 99 x NARI 34
(13.48%) recorded highest standard heterosis. For linoleic acid
Sagarmathiyalu x A 2 recorded highest heterobeltiosis (6.85%) and
AKS/ GMU 2724 x JSF 1 (9.04%) highest standard heterosis. For oleic
acid JSI 97 x A 2 recorded the highest heterobeltiosis (20 .93%) and
standard heterosis (19 .54%).
Analysis of variance for combining ability revealed that both
GCA and SCA variance were significant for all the traits indicating both
additive and non additive components were found to play signif1cant
role in inheritance of these traits.
For seed yield per plant Bhima (1 .877) was the best general
combiner followed by AKS/S 41 (1 .648) and AKS/GMU 2724 (1 .603).
For oil content NARI 34 (2 .825) was best general combiner followed by
Sagarmuthiyalu (0.475) and PBNS 12 (0.336). JSF1 was best general
combiner for linoleic acid and for oleic acid Sagarmuthiyalu was the
best general combiner. Best general combiners were also identified for
all other traits studied.
Cross JSF1 x A 2 (9 260) recorded highest significant specific
combining ability effect for seed yield per plant followed by JSF1 x
NARI 34 (7 .331) and AKS/S 41 x JSF 1 (7 .123). These crosses also
showed significant SCA effects for other component characters. For oil
content highest significant SCA effect was recorded by JSI 97 x JSF1
(3.884) followed by Bhima x NARI 34 (3.648). For linoleic acid
Sagarmuthiyalu x A2 (5.398) recorded highest SCA effect.
Best general combiners for various traits identified in present
investigation can be utilized in breeding programme.
Considering combining ability effects for seed yield and yield
components and extent of heterosis, it can be suggested that simple
recurrent selection or bi-parental mating followed by reciprocal
recurrent selection may be effective. Significant break through in yield
advances could be made by the exploita tion of heterosis at commercial
level."
 
Date 2018-10-17T10:56:58Z
2018-10-17T10:56:58Z
2011
 
Type Thesis
 
Identifier "RATNAPARKHI RAJENDRA DATTATRAYA(2011), HETEROSIS AND COMBINING ABILITY STUDIES WITH SPECIAL REFERENCE TO OIL CONTENT IN SAFFLOWER (Carthamus tinctorius L.), DEPARTMENT OF AGRICULTURAL BOTANY, POST GRADUATE INSTITUTE, AKOLA, DR. PANJABRAO DESHMUKH KRISHI VIDYAPEETH, KRISHINAGAR PO, AKOLA, Phd 2011, 160p"
http://krishikosh.egranth.ac.in/handle/1/5810081711
 
Language en
 
Format application/pdf
 
Publisher Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra