A method for adventitious shoot regeneration from mature cotyledons and leaves of seed-derived Loquat (Eriobotrya japonica cv. ‘Dahongpao’) in vitro has been developed. The results showed that: 1) GA pre-treatments ...A method for adventitious shoot regeneration from mature cotyledons and leaves of seed-derived Loquat (Eriobotrya japonica cv. ‘Dahongpao’) in vitro has been developed. The results showed that: 1) GA pre-treatments could shorten the time of seed germination. 2) Shoots regeneration occurred when mature cotyledons were cultured on MS supplemented with TDZ and GA. The highest adventitious shoot frequency from mature cotyledons was 83.3%. The regeneration was changed when mature cotyledons were wounded by a razor blade and the best results were obtained from the single mature cotyledons with plantule. Shoots could regenerate from mature cotyledons with plantule, but could not get any regeneration of adventitious shoot from the mature cotyledons without plantule. 3) Different part of leaf had different potential of regeneration. Adventitious shoots regenerated from the part which near the leaf-petiole through callus, but the other parts of leaf only got callus. The highest adventitious shoot frequency from the part of leaf-petiole was 65.0%.展开更多
以美味猕猴桃[Actinidia deliciosa(A.chev.)C.F.Liang et A.R.Ferguson]“布鲁诺”(Bruno)果实为试材,研究(20±1℃)后熟过程中乙烯生成、超氧物歧化酶(SOD)和过氧化物酶(POD)的活性变化。结果表明:猕猴桃果实具有典型的乙烯跃变峰...以美味猕猴桃[Actinidia deliciosa(A.chev.)C.F.Liang et A.R.Ferguson]“布鲁诺”(Bruno)果实为试材,研究(20±1℃)后熟过程中乙烯生成、超氧物歧化酶(SOD)和过氧化物酶(POD)的活性变化。结果表明:猕猴桃果实具有典型的乙烯跃变峰,峰值出现在采后第11天左右;SOD活性变化与ACC含量变化呈显著正相关(r=0.6766^(?));过氧化物酶活性峰值于乙烯跃变峰之后出现。果实可溶性固型物(TSS)含量在整个后熟过程中呈持续上升趋势。SOD可能参与了猕猴桃果实的后熟调节,在乙烯生物合成过程中起重要作用;POD活性变化可以作为猕猴桃果实组织衰老的一个参数。展开更多
文摘A method for adventitious shoot regeneration from mature cotyledons and leaves of seed-derived Loquat (Eriobotrya japonica cv. ‘Dahongpao’) in vitro has been developed. The results showed that: 1) GA pre-treatments could shorten the time of seed germination. 2) Shoots regeneration occurred when mature cotyledons were cultured on MS supplemented with TDZ and GA. The highest adventitious shoot frequency from mature cotyledons was 83.3%. The regeneration was changed when mature cotyledons were wounded by a razor blade and the best results were obtained from the single mature cotyledons with plantule. Shoots could regenerate from mature cotyledons with plantule, but could not get any regeneration of adventitious shoot from the mature cotyledons without plantule. 3) Different part of leaf had different potential of regeneration. Adventitious shoots regenerated from the part which near the leaf-petiole through callus, but the other parts of leaf only got callus. The highest adventitious shoot frequency from the part of leaf-petiole was 65.0%.
文摘以美味猕猴桃[Actinidia deliciosa(A.chev.)C.F.Liang et A.R.Ferguson]“布鲁诺”(Bruno)果实为试材,研究(20±1℃)后熟过程中乙烯生成、超氧物歧化酶(SOD)和过氧化物酶(POD)的活性变化。结果表明:猕猴桃果实具有典型的乙烯跃变峰,峰值出现在采后第11天左右;SOD活性变化与ACC含量变化呈显著正相关(r=0.6766^(?));过氧化物酶活性峰值于乙烯跃变峰之后出现。果实可溶性固型物(TSS)含量在整个后熟过程中呈持续上升趋势。SOD可能参与了猕猴桃果实的后熟调节,在乙烯生物合成过程中起重要作用;POD活性变化可以作为猕猴桃果实组织衰老的一个参数。
