不同光质对丰香草莓生长发育的影响

研究了相同光强下不同光质对丰香草莓生长发育的影响。结果表明,不同光质膜处理对草莓的生长结果、干物质分配和果实品质均有影响。与中性膜相比,绿膜和红膜下草莓植株的叶柄长度和叶面积显著增加,而蓝膜的叶柄长度和叶面积明显较低。光质不同也影响草莓干物质的分配,干物质向叶片和叶柄分配比例绿膜最高,蓝膜最低,其它膜之间相近。而干物质向果实、冠状茎和根系中的分配比例均以蓝膜最高,其次为红膜,绿膜最低,黄膜与中性膜相近。红膜下生长的草莓,产量最高、果实最大;蓝膜下可溶性固形物含量、抗坏血酸含量和固酸比最高;而绿膜下则产量最低、果实最小、可溶性固形物含量和固酸比最低。抗坏血酸含量的高低与不同膜中的紫外和蓝紫光的比例一致,与红光/蓝光比值相反。

Effect of light quality on plant growth and fruiting of Toyonoka strawberry (Fragaria×ananassa) cultivar

The influence of different light quality under identical light intensity on plant growth, fruiting and fruit quality of Toyonoka strawberry (Fragaria×ananassa Duch.) was studied. The results showed that the optimum light quality for leaf and petiole growth was green film, red film was in the next place, and the last was bule film. The proportion of total plant dry biomass allocated to fruits, crowns and roots under blue film was the greatest, the next was red film, and the last was green film, neutral yellow film was similar to the neutral one, but that to leaves and petioles under green film was the greatest, the last was blue film, the rest were similar. Not only soluble solids (SSC), titratable acidity (TA), but also SSC/TA ratio was influenced by light quality. Among of five films, The yield per plant and fruit size under red film was the greatest,the SSC/TA ratio, AA and SSC content was the greatest under blue film;the yield per plant,fruit size, SSC content and SSC/TA ratio under green film were the lowest. Ascorbic acid (AA) content in the fruit under different film was correlated with red/blue ratios negatively.