库尔勒香梨短果枝花序不同序位维管束与萼片脱落关系的研究
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摘要
以库尔勒香梨为试材,比较了花期短果枝上不同序位梨果柄、胴部和萼筒维管束数目和面积的变化,并对其相应序位的果实脱萼率进行了分析。结果表明:随着花序序位升高,库尔勒香梨果实的脱萼率呈增加趋势;从大蕾期到末花期,第1序位维管束数目和面积呈增加趋势,第2、3、4和5序位维管束数目和面积表现为先增加后降低趋势(除第2序位胴部和萼筒维管束面积呈增加趋势外);在相同物候期条件下,维管束数目和面积大小均表现为第1序位>第2序位>第3序位>第4序位>第5序位;脱萼率与果柄维管束数目呈极显著负相关,与胴部维管束数目、萼筒维管束数目、胴部维管束面积和萼筒维管束面积呈显著负相关。
The changes in the number and area of vascular bundles in different orders of fruit stalk, equator and calyx tube on short fruiting branches of Korla fragrant pear at flowering stage were compared, and the sepal abscission rates of different orders of pear fruits were analyzed. The sepal abscission rate of Korla fragrant pear fruits showed an increasing trend along with the rising of inflorescence order position. From large flower-bud stage to final flowering stage, the number and area of vascular bundles in the first order revealed an increasing trend, while the number and area of vascular bundles in the second, third, fourth and fifth orders all exhibited the trend of first increasing and then declining(except that the area of vascular bundles in the second order of equator and calyx tube showed a rising trend). Under the same phenological conditions, both the number and the area of vascular bundles had the following sequence: the first order> the second order> the third order> the fourth order> the fifth order. The sepal abscission rate of pear fruits was very significantly negatively correlated with the number of vascular bundles in fruit stalk, and was significantly negatively correlated with the number and area of vascular bundles in both equator and calyx tube.
The changes in the number and area of vascular bundles in different orders of fruit stalk, equator and calyx tube on short fruiting branches of Korla fragrant pear at flowering stage were compared, and the sepal abscission rates of different orders of pear fruits were analyzed. The sepal abscission rate of Korla fragrant pear fruits showed an increasing trend along with the rising of inflorescence order position. From large flower-bud stage to final flowering stage, the number and area of vascular bundles in the first order revealed an increasing trend, while the number and area of vascular bundles in the second, third, fourth and fifth orders all exhibited the trend of first increasing and then declining(except that the area of vascular bundles in the second order of equator and calyx tube showed a rising trend). Under the same phenological conditions, both the number and the area of vascular bundles had the following sequence: the first order> the second order> the third order> the fourth order> the fifth order. The sepal abscission rate of pear fruits was very significantly negatively correlated with the number of vascular bundles in fruit stalk, and was significantly negatively correlated with the number and area of vascular bundles in both equator and calyx tube.
引文
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[12] 马宏超,王燕凌,文旭,等.不同药剂处理对库尔勒香梨脱萼和宿萼果萼筒显微结构的影响[J].果树学报,2011(3):518-520,551.
[2] Elo A,Immanen J,Nieminen K,et al.Stem cell function during plant vascular development [J].Semin Cell Dev Biol,2009(20):1097-1106.
[3] 王艳芳,叶淄,刘昊,等.苹果果实不同发育期维管束结构及水分运输变化[J].植物生理学报,2015,51(9):1414-1418.
[4] 贾晓辉,王文辉,李世强,等.‘库尔勒香梨’花萼端不同形状果实的矿质元素和内源激素含量比较[J].园艺学报,2015,42(4):751-758.
[5] 李长江,李鹏,井春芝,等.‘库尔勒香梨’幼果内源激素分布差异与果实萼片脱落的关系[J].西北农业学报,2017,26(11):1631-1638.
[6] 李长江,李鹏,罗淑萍,等.库尔勒香梨花器官不同部位内源激素含量的差异分析[J].经济林研究,2016,34(3):16-21.
[7] 赵俊,木万福,张志星.植物石蜡切片技术改进[J].安徽农学通报,2009(5):69-90.
[8] 何子顺,牛建新,吴忠华,等.库尔勒香梨花萼发育规律研究[J].新疆农业科学,2007(3):377-381.
[9] 亚合甫·木沙,牛建新,席万鹏.影响库尔勒香梨宿萼果率因素的调查[J].中国果树,2007(4):13-15.
[10] 孟剑霞,杨晓玲,郭金耀,等.玉米果穗发育的维管束特性研究[J].中国农学通报,2005,21(7):216-219.
[11] 于晓刚,张文忠,韩亚东,等.粳稻颖果维管束结构粒位间差异及其与品质性状的关系[J].作物学报,2010,36(7):1198-1208.
[12] 马宏超,王燕凌,文旭,等.不同药剂处理对库尔勒香梨脱萼和宿萼果萼筒显微结构的影响[J].果树学报,2011(3):518-520,551.