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Analysis of the subsequent growth and development of winter glasshouse lettuce in response to short periods in growth chambers during propagation

, : Analysis of the subsequent growth and development of winter glasshouse lettuce in response to short periods in growth chambers during propagation. Acta Horticulturae (39): 197-218

Lettuce seedlings were raised in growth chambers with fluorescent light giving up to 17 klx at plant level for different photoperiods, and the subsequent growth in heated glasshouses in winter was compared with that of plants raised in glasshouses in the usual way. Plants raised in growth chambers had up to 16 times greater dry weight at planting time, and they had more compact heads.

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