OAR@ICRISATEffect and interaction of temperature and photoperiod on growth and partitioning in three groundnut (Arachis hypogaea L.) genotypesS NNigamauthorR CNageswara RaoauthorJ CWynneauthorJ HWilliamsauthorMFitznerauthorG V SNagabhushanamauthorEffect of temperature and photoperiod and their interaction on -plant growth and partitioning of dry matter to pods was examined in three selected groundnut genotypes viz., TMV 2, N C Ac 17090 and VA 81B. The genotypes were grown in six walk-in growth chambers which were programmed to simulate three temperature regimes (22/18°C, 26/22°C and 30/26°C day/night) each under long (12 h) and short (9 h) photoperiods. The plant growth rates and partitioning of dry matter to pods were estimated on a thermal time basis. Plant growth (PLGR) was significantly influenced by tp""1T'1P.T::.tJ toperiod and genotype, whereas pod growth rate (PLGR) was primarily by temperature and genotype. The interaction of genotype with photoperiod and with temperature was significant for both PLGR and PDGR. For example, at the 22/18°C temperature regime, VA 81B had a high PDGR, while NC Ac 17090 did not even initiate pod growth. The partitioning of dry matter to pods (Pf) was also significantly influenced by photoperiod, temperature and genotype, and significant interactions were found. Photoperiod did not significantly affect Pf under the low temperature regime, but at higher temperatures, partitioning to pods was significantly under short days. Pf of VA 81B was relatively insensitive to photoperiod compared with the other two genotypes. study provided evidence of genotypic variability for photoperiod x temperature interactions which could influence adaptation of groundnut to new environmentsGroundnut1994Association of Applied BiologistsArticle

For work being deposited by its own author: In self-archiving this collection of files and associated bibliographic metadata, I grant OAR@ICRISAT the right to store them and to make them permanently available publicly for free on-line. I declare that this material is my own intellectual property and I understand that OAR@ICRISAT does not assume any responsibility if there is any breach of copyright in distributing these files or metadata. (All authors are urged to prominently assert their copyright on the title page of their work.)

For work being deposited by someone other than its author: I hereby declare that the collection of files and associated bibliographic metadata that I am archiving at OAR@ICRISAT) is in the public domain. If this is not the case, I accept full responsibility for any breach of copyright that distributing these files or metadata may entail.

Clicking on the deposit button indicates your agreement to these terms.