Effects of Temperature and Photoperiod on Flowering in Lentils (Lens culinaris Medic.) |
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| Authors: | SUMMERFIELD R J; ROBERTS E H; ERSKINE W; ELLIS R H |
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| Institution: | University of Reading, Department of Agriculture and Horticulture, Plant Environment Laboratory Shinfield Grange, Cutbush Lane, Shinfield, Reading, Berks RG2 9AD, UK |
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| Abstract: | Factorial combinations of three photoperiods (10, 13 and 16h), two day temperatures (18 and 28 C) and two night temperatures(5 and 13 C) were imposed on nodulated plants of six diversegenotypes (cultivars and land-races) of lentil (Lens culinarisMedic.) grown in pots in growth cabinets from vernalized (1.50.5 C for 30d) or non-vernalized seeds (i.e. 144 ‘treatment’combinations). The times from sowing to the appearance of firstopen flowers were recorded. Vernalization, long days and warmtemperatures hastened flowering but genotypes differed in relativesensitivity to each of these factors and in time to floweringin the same most-inductive environment. Rates of progress towardsflowering (i.e. 1/f the reciprocals of the times to first flower,f) in all genotypes, vernalized or not, were linear functionsof both mean temperature, |
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