GENETIC VARIABILITY STUDIES IN F2 AND F3 POPULATIONS OF SELECTED CROSSES IN GROUNDNUT (Arachis hypogaea L.)
KrishiKosh
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Title |
GENETIC VARIABILITY STUDIES IN F2 AND F3 POPULATIONS OF SELECTED CROSSES IN GROUNDNUT (Arachis hypogaea L.)
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Creator |
VINUTHA, D N
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Contributor |
Jagadeesh, B N
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Subject |
livestock, biological phenomena, seasons, organic compounds, concentrates, summer, research methods, purification, glucose, peptides
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Description |
Six F2 populations viz., ICGV12370 × NRCG12473, ICGV12370 × NRCG12274, GKVK-8B × GPBD-4, GKVK-5 × GPBD-4, GKVK-8B × Chinthamani-2 and GKVK-5 × Chinthamani-2 along with selected three F3 families viz., ICGV12370 × NRCG12274, GKVK-8B × Chinthamani-2 and GKVK-5 × Chinthamani-2 were assessed for genetic variability during kharif 2012 and summer 2013. Magnitude of GCV and PCV values was high for pods plant-1, pod yield plant-1, kernel yield plant-1, sound mature kernels (SMK) and branches plant-1 in all crosses in both generations indicated large extent of genetic variability. All F2 populations showed high heritability with GAM for SMK and shelling percentage. ICGV 12370 × NRCG 12473 manifested for kernel yield plant-1 and cross GKVK-5 × Chinthamani-2 for pods plant-1 indicating involvement of additive gene action. But in F3 generation moderate heritability with high GAM was observed for plant height, yield related traits and Specific Leaf Area (SLA) in crosses GKVK-8B × Chinthamani-2 and GKVK-5 × Chinthamani-2. In F2 generation pod yield plant-1 was associated positively with kernel yield plant-1, pods plant-1 and SMK. SPAD Chlorophyll meter reading (SCMR) and SLA had significantly negative correlation with each other in all crosses except GKVK- 5 × GPBD- 4. Kernel yield plant-1 manifested maximum direct effect on Pod yield plant-1 in all crosses and thus kernel yield is the important trait for enhancing pod yield in groundnut. F3 family performance of cross GKVK-8B × Chinthamani-2 for pod yield was superior over other crosses and check TMV-2. |
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Date |
2016-11-02T10:51:07Z
2016-11-02T10:51:07Z 2013-09-23 |
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Type |
Thesis
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Identifier |
Th-10658
http://krishikosh.egranth.ac.in/handle/1/83279 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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