Effect of Light Quality on the Fruit Quality of ‘Toyonoka’ Strawberry(Fragaria×ananassa Duch.)

The influence of different light qualities under identical light intensity on fruit quality of Toyonoka strawberry(Fragaria×ananassa Duch.) was studied.The results showed that fruit surface color was greatly affected by light quality.The chroma value of fruits became greater and greater in turn under green,neutral,yellow,blue,and red film,which was correlated with the percentum of reddish orange light in overall radiant energy positively.Ascorbic acid(AsA) content in the fruits under different films was correlated with Red/Blue ratio negatively.Among of five films,the yield per plant and fruit size under red film were the greatest,the SSC/TA ratio,SSC,AsA and sugar content were the greatest under blue film,but all of which were the lowest under green film.The fruit surface color was the reddest under red film,that under green films was the worst.Ascorbic acid(AsA) content in the fruits under different film was correlated with red/blue ratio negatively.