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不同基因型砧木嫁接黄瓜光合特性的比较

标题: 不同基因型砧木嫁接黄瓜光合特性的比较
英文标题: Study on the Photosynthetic Characteristics of Fruiting Fastigium of Grafted Cucumber on Different Genotype Stocks
作者: 李欣
出版时间: 2006-01-01
所在大学: 河北农业大学
关键词: 黄瓜,砧木,嫁接,光合,叶位
英文关键词: cucumber,stock,graft,photosynthesis,leaf position
论文级别: 硕士
学位: 学位论文
导师: 申书兴
专业: 蔬菜学
提交时间: 2006
摘要: 本试验以河北农业大学园艺学院蔬菜育种室提供的白籽南瓜A1、A2、B1、B2、B3为试材,以生产上最常用的黄瓜砧木黑籽南瓜为对照,对其嫁接黄瓜的光合生理及产量品质进行了分析比较.结果如下: 1.苗期光合生理指标.净光合速率的比较结果为:黑籽南瓜>B1>A2>B3>A1>B2, 黑籽南瓜和B1嫁接黄瓜叶片的叶绿素和可溶性糖含量最高,且两者均无显著差异,A2、B3、A1和B2嫁接黄瓜叶片叶绿素和可溶性糖含量的比较结果与净光合速率的比较结果基本一致.黑籽南瓜、B1、A2和B3嫁接黄瓜叶片的可溶性蛋白含量最高且无显著差异,其次是A1嫁接的黄瓜,B2嫁接黄瓜叶片的可溶性蛋白含量最低. 2.黑籽南瓜、A2和B1嫁接黄瓜的根长和根重均无显著差异,其次是A1、B3和B2.根系活力的比较结果为B1>黑籽南瓜>A2>B3>A1>B2,但黑籽南瓜与B1嫁接黄瓜的根系活力无显著差异. 3.黑籽南瓜与B1和A2嫁接黄瓜在低温胁迫开始时SOD、POD、MDA差异均不显著,随着低温胁迫时间的延长,各砧木之间的差异越来越明显,长时间胁迫下综合比较抗寒结果为:黑籽南瓜>B1>A2>B3>A1. 4.黑籽南瓜与各供试砧木嫁接黄瓜的光合日变化均为双峰曲线,有明显午休现象,各砧木嫁接黄瓜日平均净光合速率的比较结果为:B1>A2>黑籽南瓜>A1>B3>B2. 5.黑籽南瓜与各供试砧木嫁接黄瓜不同叶位的净光合速率均呈单峰曲线,且均在第十叶位达光合最高峰,表明第十叶位功能叶片是所有叶片中光合能力最强的, A2和B1嫁接黄瓜各叶位叶片的净光合速率均高于黑籽南瓜嫁接黄瓜相应叶位的叶片,在第十二叶位叶片仍具有较高的光合速率,表明A2和B1嫁接的黄瓜不仅光合速率高,而且可维持较长时间较强的光合速率,有利于提高植株整体的光合能力,不同砧木嫁接黄瓜不同叶位平均净光合速率的比较结果为: B1>A2>B3>黑籽>A1> B2. 6.A2和B1嫁接黄瓜比黑籽南瓜嫁接的黄瓜利用光能的范围广,A2利用弱光的能力最强,在日光温室相对较弱的光强下可维持较长时间较高的光合速率,是其高产的主要原因之一.A1与黑籽南瓜嫁接黄瓜利用弱光能力相近,B3和B2嫁接黄瓜利用弱光的能力均不及黑籽南瓜嫁接的黄瓜. 7.A2和B1嫁接黄瓜比黑籽南瓜嫁接的黄瓜利用CO2的范围广,且利用高浓度CO2的能力强,B1嫁接黄瓜利用低浓度CO2的能力最强,A2与黑籽南瓜嫁接黄瓜利用低浓度CO2的能力相近,A1、B3和B2嫁接黄瓜利用低浓度CO2的能力均不及黑籽南瓜嫁接的黄瓜. 8. B1、A2 、B3 和A1嫁接黄瓜的叶绿素、可溶性蛋白和可溶性糖的含量均高于黑籽南瓜嫁接的黄瓜,其中B1嫁接黄瓜的叶绿素、可溶性蛋白、可溶性糖含量最高,B2嫁接黄瓜的各项生理指标均低于黑籽南瓜嫁接的黄瓜. 9.在所有供试砧木中,A2嫁接黄瓜的产量最高,其次是B1嫁接的黄瓜, B3、A1、B2嫁接黄瓜的产量均不及黑籽南瓜嫁接的黄瓜. 平均单瓜重除A1外,其余砧木嫁接黄瓜的平均单瓜重均小于黑籽南瓜嫁接的黄瓜,其中B1、B2和B3嫁接黄瓜的平均单瓜重无显著差异,A2嫁接黄瓜的平均单瓜重最低.A2、B1和A1嫁接黄瓜的雌花节率均高于黑籽南瓜嫁接的黄瓜,其中A2和B1嫁接黄瓜的雌花节率分别高于黑籽南瓜嫁接的黄瓜25.2%和23.1%,是高产的主要原因之一. 10.A2、B1和B3嫁接黄瓜的果实营养品质均优于黑籽南瓜嫁接的黄瓜,A1与B2嫁接黄瓜的果实营养品质与黑籽南瓜嫁接的黄瓜相近,其中B1嫁接黄瓜果实无果霜,A1嫁接的果实少霜,极大的提高了外观品质.??
英文摘要: In this experiment,the series of stocks,such as white seed pumpkin A1,A2,B1,B2,B3 cultivated by Hebei Agricultural University were chosen as experiment materials,and black seed pumpkins as contrasts.The effect on the photosynthetic characteristics,physiological characteristics,yield and quality of the grafting cucumber on different stocks were studied.The result of the experiment were as the following. 1.In the seeding periord,the comparing results of the net photosynthetic rate of grafting cucumber on different stocks were black seed pumpkin>B1>A2>B3>A1>B2.The soluble sugar content and chlorophyll content of grafting cucumber on black seed pumpkin and B1 had no evidently difference,and higher than them on other stocks.The comparing results of soluble sugar content and chlorophyll content of grafting cucumber on A2,B3,A1and B2 were similar to the net photosynthetic rate,s comparing results of them.The soluble protein content of grafting cucumber on black seed pumpkin,B1,A2 and B3 had no evidently difference,the next is the grafting cucumber on A1,and the soluble protein content of grafting cucumber on B2 were the lowest. 2.The root length and root weight of grafting cucumber on black seed pumpkin,A2and B1 had no evidently difference,next were grafting cucumber on A1,B3 and B2.The comparing results of the root energy of grafting cucumber on different stocks were B1>black seed pumpkin>A2>B3>A1>B2,but the root energy of grafting cucumber on B1 and black seed pumpkin had no evidently difference. 3.In the beginning of low temperature stress,the SOD activity,POD activity and MDA content of grafting cucumber on black seed pumpkin,B1 and A2 had no evidently difference,but along with prolonging of time,the difference of grafting cucumber on different stocks were more and more evidently,the synthetical comparing result were black seed pumpkin>B1>A2>B3>A1. 4.The diurnal variation of grafting cucumber both on the black seed pumpkin and on the white seed pumpkin were curve of two zenith,the nooning phenomenon were evidently.The comparing result of diurnal average net photosynthetic rate were B1>A2>black seed pumpkin>A1>B3>B2. 5.The net photosynthic rate of different leaf positions of grafting cucumber on different stocks were all curve of one zenith,and the net photosynthetic rate of leaves on the tenth leaf position were the zenith of curive,indicating the photosynthetic ability of leaves on the tenth leaf position were the strongest.The net photosynthetic rate of earch laef position,s of grafting cucumber on A2 and B1 were higher than the corresponding leaf position,s leaves of grafting cucumber on black seed pumpkin,and the leaves of the twelfth leaf position of them still had higher net photosynthetic rate,indicating the grafting cucumber on A2 and B1 not only had high net photosynthetic rate,but could maintain higher net photosynthetic rate for long time,in favor of improving the whole plant,s photosynthetic ability.The comparing result of average photosynthetic rate of different leaf position,s leaves of grafting cucumber on different stocks were B1>A2>B3>black seed pumpkin>A1>B2. 6.The grafting cucumber on A2 and B1 had more extensive range of using light than them on black seed pumpkin. The ability of using weakly light of grafting cucumber on A2 were the highest,and can maintain higher photosynthetic rate for longer time on weakly light in greenhourse,which were the reason of high yield.The grafting cucumber on A1 and black seed pumpkin had similar ability of using weakly light,and the ability of using weakly light of the grafting cucumber on B3 and B2 were lower than them on black seed pumpkin. 7. The grafting cucumber on A2 and B1 had more extensive range of using CO2 than them on black seed pumpkin.The ability of using low concentration CO2 of grafting cucumber on B1 was the highest.The grafting cucumber on A2 and black seed pumpkin had similar ability of using low concentration CO2,and the ability of using low concentration CO2 of grafting cucumber on A1,B3 and B2 were lower than them on black seed pumpkin. 8.The chlorophyll content,soluble sugar content and soluble protein content of grafting cucumber on B1,A2,B3 and B2 were all higher than them on black seed pumpkin,and chlorophyll content,soluble sugar content and soluble protein content of grafting cucumber on B1 were the highest.The each physiological index of grafting cucumber on B2 were all lower than them on black seed pumpkin. 9.In all testing stocks,the average yield of single plant of grafting cucumber on A2 were the highest,the grafting cucumber on B1 was the next, the average yield of single plant of grafting cucumber on B3,A1 and B2 were lower than them on black seed pumpkin.The average weight of single fruit of grafting cucumber on all testing stocks were lower than them on black seed pumpkin except the stock A1, The average weight of single fruit of grafting cucumber on A2 was the lowest,and the average weight of single fruit of grafting cuc