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Determination of the best performing Sri Lankan maize accessions based on the photosynthetic, biomass and yield traits

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dc.contributor.author Mufeeth, M. M. M.
dc.contributor.author Mubarak, A. N. M.
dc.contributor.author Kumara, A. D. N. T.
dc.date.accessioned 2023-07-12T16:46:38Z
dc.date.available 2023-07-12T16:46:38Z
dc.date.issued 2023-06-19
dc.identifier.citation Tropical Agricultural Research, 34(3): pp. 227-236. en_US
dc.identifier.issn 2706-0233 (Elec)
dc.identifier.issn 1016-1422 (Print}
dc.identifier.uri http://ir.lib.seu.ac.lk/handle/123456789/6722
dc.description.abstract Maize (Zea mays L.) is one of the most widely cultivated cereal crops throughout the world and is extensively grown in Sri Lanka. Information on the photosynthetic, biomass and grain yield of local maize accessions are useful for plant breeding programs. However, due to the scarcity of such information, this study aimed to investigate the potentials of maize accessions to select the best performers utilizing the rank summation and selection index criteria. As the first step, the seeds from 14 maize accessions along with two varieties viz; Pacific999 and Bhadra (control) were established in the field. The leaf-level photosynthetic and chlorophyll fluorescence traits were analyzed, while biomass and yield traits were obtained at harvest, by employing standard techniques. Our findings revealed that traits related to growth, photosynthesis, and biomass showed greater variations among the maize accessions tested. The number of days taken to 50% flowering (44d-60d), photosynthetic rates (19.7-30.45 µmol CO2 m−2 s −1), transpiration rates (2.45-4.52 mmol H2O m−2 s −1), water use efficiency (5.69-8.13 µmol CO2 mmol H2O-1), and maximum quantum yield (0.68-0.73) among the tested accessions. Additionally, the variations in biomass (111.0- 459 g/plant) and final cob yield (38-232 g/cob) were also seen among the maize accessions. According to rank summation index analysis, the maize accessions SEU2, SEU16, SEU15, SEU9 and SEU10 were superior in terms of photosynthetic rates, biomass and yield compared exhibiting with the lowest RSI values of 71, 100, 101, 103 and 117, respectively, than the cv. Bhadra. Therefore, future crop development programs can make use of these five potential maize accessions identified through this study. en_US
dc.language.iso en_US en_US
dc.publisher Postgraduate Institute of Agriculture, University of Peradeniya en_US
dc.subject Maize landrace en_US
dc.subject Photosynthesis en_US
dc.subject Above ground biomass en_US
dc.subject Grain yield en_US
dc.title Determination of the best performing Sri Lankan maize accessions based on the photosynthetic, biomass and yield traits en_US
dc.type Article en_US


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