TY  - CONF
AV  - public
N2  - Pre- harvest sprouting in groundnut (Arachis hypogaea L.) seeds belonging to subspeciesjastigiara (Spanish
bunch) is undes irabl e. Since it leads to in vitro germination resulting in substantial loss of seeds, both in
quantity and quality. A short peri od of dormancy is therefore des irable in the sub-species to reduce such
losses. Evaluati on of fresh seed dormancy was conducted for two seasons to determine the intensity and
duration of dormancy in recombinant inbred population with 268 RILs developed from crosses involving
moderately dormant (GPBD-4) and non-dormant (TAG-24) parents. The intensity of dormancy ranged from
o to 100% in summer season while 0 to 90% in kharifseason. There was large vatiation in the intensity of
dormancy whi ch could be related to genetic di fferences between the entries tested. RIL nos. 165, 259, 160,
172,209,254,2 13,247, and 248 recorded very high values (> 70 %) of intensity of dormancy in both the
seasons. The vari ation for dormancy in terms of duration as revealed by germination of 70% (G 70
estimates) was subsequently large as compared to the intensity of dormancy among the RILs. The RIL nos.
5, 40, 84, 165, 183,209,2 13, 248, 254,259 and 265 were found to have more than two weeks of dormancy
(based on G70 count) in both the seasons. These dormant lines can be utilized in breeding for fresh seed
dormancy under Spani sh background.
UR  - http://oar.icrisat.org/9226/
SP  - 22
Y1  - 2015/11//
T2  - Proceedings of the 8th International Conference of the Peanut Research Community-Advances in Arachis through Genomics and Biotechnology (AAGB-2015)
EP  - -
TI  - Evaluation of intensity and duration of seed dormancy in a recombinant inbred population derived from Spanish bunch genotypes
ID  - icrisat9226
A1  - Naganagoudar, Y B
A1  - Kenchangoudar, P V
A1  - Motagi, B N
A1  - Gowda, M V C
A1  - Nadaf, H L
A1  - Pujer, S
KW  - Genotyping Tools
KW  -  Groundnut
KW  -  Peanut
KW  -  Genetic Improvement
KW  -  Genetics
M2  - November 4 - 7, 2015
N1  - The conference was organized by: The Peanut Foundation The Peanut Company of Australia
ER  -