CHANGES IN CARBON FIXATION, UTILIZATION AND ASSIMILATE PARTITIONING RATES ON FREEZING AND LOW TEMPERATURE HARDENING OF BRASSICA JUNCEA COSS AND CZERN PLANTS.

Type of article: Article

Summary

FREEZING INJURY REDUCES RATE OF PHOTOSYNTHESIS, BUT CAUSES A SLIGHT ENHANCEMENT IN RESPIRATION RATE IN B. JUNCEA. HILL ACTIVITY OF CHLOROPLASTS, ISOLATED 24 HR LATER, WAS COMPARABLE TO UNFROZEN CONTROL. CHLOROPHYLL CONTENT ALSO DECREASED ON FREEZING. LOW TEMPERATURE HARDENED PLANTS HOWEVER, SHOWED NO DECREASE IN RATES OF PHOTOSYNTHESIS OR HILL ACTIVITY OR CHLOROPHYLL CONTENT. THE PARTITIONING OF PHOTOSYNTHATES FROM LEAVES TO REPRODUCTIVE PARTS WAS ONLY MARGINALLY AFFECTED BY FREEZING. THE IMPAIRMENT OF PHOTOSYNTHETIC CO2 FIXATION APPEARS TO BE A POSSIBLE MEANS OF INJURY DUE TO FREEZING STRESS.

Details

Original title: CHANGES IN CARBON FIXATION, UTILIZATION AND ASSIMILATE PARTITIONING RATES ON FREEZING AND LOW TEMPERATURE HARDENING OF BRASSICA JUNCEA COSS AND CZERN PLANTS.
Record ID : 1987-0545
Languages: English
Source: Indian J. exp. Biol. - vol. 24 - n. 2
Publication date: 1986
Document available for consultation in the library of the IIR headquarters only.

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Indexing

Themes: Seeds and plants
Keywords: Plant (botany); Frost; Condiment; Deterioration; Cryopreservation; Freezing; Chlorophyll