ICRISAT Archival Report 2006 - The seedlings of success in the ...

Output target C.9: Broadening the genetic base of legumes through wide crosses (2011)
Activity C.9.1: Broadening the genetic base of groundnut by creating tetraploid groundnut using wild
Arachis, synthetic amphidiploids and/or other diverse germplasm.
Milestone C.9.1.1: Hybrids between A and B genome species made available (NM/HDU/DH, 2007)
We produced 18 F 1 diploid hybrids between different accessions of five A genome and five B genome Arachis
species. Some of the hybrids did not set seeds in spite of profuse peg formation and only five hybrids produced
seeds (F 2 seeds). Attempts are being made to obtain seeds from other crosses too.
N Mallikarjuna, HD Upadhyaya and DA Hoisington
Milestone C.9.1.2: Tetraploid hybrids between different genomes generated and skeletal map constructed
(NM/RKV/HDU/DH, 2008)
Milestone C.9.1.3: Hybrids between cultivated groundnut and synthetic amphidiploids created, variation for
different traits analyzed and molecular map constructed (NM/RKV/HDU/DH/FW/PLK, 2009)
Milestone C.9.1.4: Develop hybrids between section Arachis and section Procumbentes and generate fertile
backcross population and screen for desirable traits (NM/DH/HDU/FW/PLK/EM, 2009)
F 2 plants from A. hypogaea x A. chiquitana ICG 11560 (section Procumbentes) and A. hypogaea x A.
kretschmeri IG 8191 (section Procumbentes) crosses were used to produce back cross progenies with the
cultivated species. Most of the pods on progenies were single seeded. Efforts will be directed to generate large
numbers of seeds.
N Mallikarjuna, DA Hoisington and HD Upadhyaya
Milestone C.9.1.5: Tetraploid molecular map available for use in breeding program
(NM/RV/HDU/DH/FW/PLK/CLLG, 2010)
Activity C.9.2: Broaden the genetic base of pigeonpea using Cajanus platycarpus, a tertiary gene pool
species of Cajanus
Milestones C.9.2.1: Generate fertile hybrids between Cajanus platycarpus and C. cajan (NM/DH/HDU, 2007)
BC 3 plants (Cajanus platycarpus x C. cajan) are being crossed with recurrent cultivated parent in the
glasshouse, as BC 3 plants do not set seeds from self-pollinations. Twenty three lines of fertile backcross progeny
(BC 4 ) between C. platycarpus x C. cajan were generated and planted in the field for seed increase. BC 4 have set
seeds from self-pollinations.
N Malikarjuna, DA Hoisington and HD Upadhyaya
Milestone C.9.2.2: Generate variation for desirable characters using Cajanus platycarpus
(NM/HDU/RKV/DH/KBS, 2009)
BC 4 plants from the cross Cajanus platycarpus x C. cajan were screened for variability under field conditions
and variability was observed for plant type, number of secondary branches, vegetable type of pod
characteristics, days to flowering, profuse pod set, male sterility, and plant height. The experiment will be
repeated to verify if these characters are heritable.
N Malikarjuna, HD Upadhyaya, RK Varshney and DA Hoisington
Output target C.10: Data management infrastructure development (2010)
Activity C.10.1: Data capture instruments expanded and functionality increased.
Milestone C.10.1.1: Beta testing of the Laboratory information management system and improvement
(JB/DAH/SS/RKV/DK/SV, 2007).
The beta testing of the LIMS system is in progress at ICRISAT. The respective data producers have uploaded
genotyping data for the composite core collections of chickpea and sorghum into the system. The application
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