Seedling Progeny Analysis in Selected Clones of Guinea Grass [Panicum Maximum Jacq.]
By: Babu R.
Contributor(s): Suma Bai D I (Guide).
Material type:
BookPublisher: Vellayani Department of Plant Breeding and Genetics, College of Agriculture 1997DDC classification: 630.28 Online resources: Click here to access online Dissertation note: MSc Abstract: A study was carried out at the Department of Plant Breeding and Genetics,
College of Agriculture. Vellayani during July 1996 to May 1997 with the objective of
ascertaining the seedling progeny behaviour in selected clones of guinea grass. A field
experiment was conducted utilizing ten guinea grass clones available with All India Co-
ordinated Research Project on Forage Crops to assess variability and identify three
superior clones. Analysis of variance revealed significant difference for seven out of the
eleven characters studied. The estimates of genotypic and phenotypic coefficient of
variation were in general low for all the characters. Leaf area index recorded high
heritability coupled with low genetic gain indicating non additive gene action. Correlation
values of green fodder yield with all other characters were positive both at genotypic and
phenotypic level. A selection index was formulated and three high yielding clones viz
JHGG 96-3. JHGG 96-4 and Riversdale were selected and then subjected to progeny
mean analysis along with two high yielding mutant clones viz Haritha and Marathakom in
a compact family block design using seeds and slips. Marathakom recorded insignificant
difference in variability with respect to two types of planting materials for ten out of the
eleven characters studied, thus confirming the predominance of apomictic mode of
reproduction and suitability to large scale seed production. Significant difference in
variability was discernible in the remaining clones for more than one character indicating
prevalence of sexual reproduction in these clones. Further studies on inheritance of
percentage sexual reproduction in these clones would be desirable before embarking on
large scale seed production.
| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
Theses
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KAU Central Library, Thrissur Theses | 630.28 BAB/SE (Browse shelf) | Available | 171203 |
MSc
A study was carried out at the Department of Plant Breeding and Genetics,
College of Agriculture. Vellayani during July 1996 to May 1997 with the objective of
ascertaining the seedling progeny behaviour in selected clones of guinea grass. A field
experiment was conducted utilizing ten guinea grass clones available with All India Co-
ordinated Research Project on Forage Crops to assess variability and identify three
superior clones. Analysis of variance revealed significant difference for seven out of the
eleven characters studied. The estimates of genotypic and phenotypic coefficient of
variation were in general low for all the characters. Leaf area index recorded high
heritability coupled with low genetic gain indicating non additive gene action. Correlation
values of green fodder yield with all other characters were positive both at genotypic and
phenotypic level. A selection index was formulated and three high yielding clones viz
JHGG 96-3. JHGG 96-4 and Riversdale were selected and then subjected to progeny
mean analysis along with two high yielding mutant clones viz Haritha and Marathakom in
a compact family block design using seeds and slips. Marathakom recorded insignificant
difference in variability with respect to two types of planting materials for ten out of the
eleven characters studied, thus confirming the predominance of apomictic mode of
reproduction and suitability to large scale seed production. Significant difference in
variability was discernible in the remaining clones for more than one character indicating
prevalence of sexual reproduction in these clones. Further studies on inheritance of
percentage sexual reproduction in these clones would be desirable before embarking on
large scale seed production.
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