Karyanto, Agus (1997) PHOTOSYNTHESIS AND YIELD OF WHEAT GROWN UNDER DIFFERENT TEMPERATURE REGIMES. Jurnal Biologi Indonesia, II (1). pp. 19-27. ISSN 0854-4425

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Response of maturing plants to high temperature stress may be determined by shoot/root interaction that mediate root senescence. This study elucidated the photosynthesis and yield of wheat (Triticum aesticum L ) under different shoot/root temperatures. Plants were subjected to 22/22oC, 22/32oC, 32/22oC, and 32/32oC shoo/root regimes from 7 day after anthesis until they matured. Viable leaf area was greatly reduced by high root temperature al high or low shoot temperature. Photosynthesis, stomatal conductance, and chlorophyll variable fluorescence were deceased more by high root than by high shoot temperature High root temperature promoted senescence and less grain yield. Low grain mass under high shoot/root temperature was caused by small seed size due to short grain-filling duration and inadequate photosynthate. In conclusion, root temperature is involved in shoot senescence, which in tum may regulate photosynthate partitioning and gain development Key words: photosynthesis, shoot/root temperature, wheat,

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Agroteknolgi
Depositing User: Dr. AGUS KARYANTO
Date Deposited: 02 May 2023 01:40
Last Modified: 02 May 2023 01:40
URI: http://repository.lppm.unila.ac.id/id/eprint/50856

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