^3H—BA在脐橙果实内的吸收与残留研究  

Absorption and Residue of 3H-BA in Navel Orange Fruits

作　　者：彭良志[1,2] 何首林[1,2] 汤军[1,2] 

机构地区：[1]中国农业科学院柑桔研究所 [2]西南农业大学同位素研究室

出　　处：《园艺学报》1997年第4期325-328,共4页Acta Horticulturae Sinica

摘　　要：用３Ｈ－ＢＡ＋ＧＡ３处理枳（Ｐｏｎｃｉｒｕｓｔｒｉｆｏｌｉａｔａ）砧‘清家’脐橙（Ｃｉｔｒｕｓｓｉｎｅｎｓｉｓ）幼果。果实对３Ｈ－ＢＡ的积累速度以处理后２４ｈ内最快。此后，随时间的延长而趋缓。至９月１日，果实内３Ｈ放射活性累积量达峰值。之后果实内３Ｈ放射活性累积出现负增长。成熟期间，果实内３Ｈ放射活性累积量比峰值减少约４０％。３Ｈ－ＢＡ浓度在处理后２４ｈ即达０．４５μｇ／ｇＦＷ，４天后达峰值０．５６μｇ／ｇＦＷ，然后逐渐降低，成熟期仅为０．００５μｇ／ｇＦＷ，且此时果肉中检测不到３Ｈ－ＢＡ残留。１１月１日，检测与处理果不同距离处着生的不同时期叶片以及枳砧根系，均未发现３Ｈ－ＢＡ残留。Young fruits (0.5～0.7cm in diameter) of ‘Seike’ navel orange ( Citrus sinensis ) on trifoliata orange ( Poncirus trifoliata ) were painted with 3H-BA+GA 3. Results showed that 3H -BA accumulation rate in young fruits increased rapidly in 24h after treat ment 3H activity/fruit peaked on Sept. 1. During fruit mature stage, 3H activity/fruit was about 60% of its peak volume. 3H-BA concentration in fruits was 0.45μg/g FW 24h after treatment, and its peak volume was 0.56μg/g FW 4 days after treatment. After the peak, 3H-BA concentration in fruits reduced, and during mature stage, was only 0.005μg/g FW based on the whole fruit. 3H-BA residues were not found in fruit fresh, different age leaves on different distances from treated fruits, and roots of trifoliata orange root stock.

关 键 词：^3H-BA 脐橙 吸收 残留 

分 类 号：S666.401[农业科学—果树学]