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晚秋给两年生未结果温州蜜柑盆栽苗饲喂~(14)CO_2,随后测定不同物候期柑桔苗各器宫的~(14)C同化物的放射性总后度、比活度、~(14)C可溶性成分及氨基酸相对含量.结果表明,在次年新器官生长前,~(14)C同化物主要由叶片向根部运转,~(14)C总活度在根系中的分配达50％以上.从标记后半个月到休眠期,所有器官包括秋叶的放射性比活度增加,唯有春叶比活度明显降低,秋叶却能从春叶中获得养价补充.次年5～11月,新梢生长动用约1/5的14C同化物,同时地上部其他器官的~(14)C分配减少约8.57％,根部减少5.45％,表明新梢生长所需养分主要来自地上部.可溶性~(14)C随年周期进程不断减少.可溶性成分中氨基酸相对含量以新器官和生长期间的器官为高.韧皮部的放射性比活度明显高于木质部,氨基酸含量也以前者为高.
In the late autumn of the year, the mandarin citrus potted plants were fed with (14) CO_2, and the total radioactivity, specific activity, ~ (14) C of the ~ (14) ) C soluble content and amino acid content.The results showed that ~ (14) C assimilate mainly ran from the leaf to the root before the new organ growth in the next year, and the total activity of ~ (14) C in the root was 50% From the second half of the mark to the dormancy stage, the radioactive specific activities of all the organs including the autumn leaves increased, but the specific activity of the spring leaves was obviously reduced, while the autumn leaves could obtain the supplemental price from the spring leaves. ~ 11 months, shoot growth used about 1/5 14C assimilates, and other parts of the aboveground ~ (14) C distribution decreased by about 8.57%, 5.45% reduction in root, indicating that the growth of nutrients required for shoot growth mainly from aboveground The soluble ~ (14) C decreased with the course of years, and the relative contents of amino acids in soluble components were higher in organs and organs during growth, and the radioactivity in phloem was higher than that in xylem.