摘要
【目的】磷为不可再生资源,且植物对土壤磷的吸收利用效率较低。通过嫁接,提高植物磷吸收利用效率具有重要的经济和生态价值。筛选磷高效利用型嫁接番茄砧木品种,建立轻简、高效的评价技术体系对磷高效利用型新砧木的选育、示范和推广具有理论和实践指导作用。【方法】以‘青恋1号’为供试番茄接穗品种,分别自嫁接(G0)或嫁接在25个番茄砧木(G1—G25)品种上。试验设置苗期和全生长期两种模式。苗期试验中,嫁接苗在正常磷(Hoagland营养液,NP)和低磷(10%磷含量的Hoagland营养液,LP)营养处理下进行水培,15 d后测定嫁接苗的生长发育及磷吸收利用效率等16个指标。全生长期试验仍以上述嫁接苗为试材,设置对照组的磷施用水平为1272 kg·hm-2,LP组的磷施用水平为对照组的50%。对植株茎叶鲜重、产量和果实品质等9个指标进行测定。通过相关性分析、主成分分析、隶属函数值分析、聚类分析、多元回归分析等数学分析模型,进行磷高效利用型嫁接番茄砧木筛选及综合评价。【结果】NP处理组在苗期和全生长期的各指标平均变异系数分别为9.74%和2.85%,LP处理组在苗期和全生长期各指标的平均变异系数分别为16.10%和5.84%。各指标在LP处理组中的变异系数普遍高于NP处理组,表明LP条件下,砧木基因型对嫁接番茄影响的差异较大。相关性分析表明,NP条件下,产量(I-17)与茎叶干重(I-1)、茎粗(I-5)、茎叶P质量分数(I-7)、茎叶P吸收效率(I-9)、整株P吸收效率(I-11)和茎叶P转运效率(I-12)呈显著正相关;在LP条件下,产量(I-17)与茎叶干重(I-1)、根干重(I-2)、茎粗(I-5)、壮苗指数(I-6)、茎叶P质量分数(I-7)、茎叶P吸收效率(I-9)、根P吸收效率(I-10)、整株P吸收效率(I-11)和茎叶P转运效率(I-12)呈显著正相关。主成分和隶属函数值分析排名显示,两种分析方法排名规律基本一致,且都符合聚类�
【Objective】Phosphorus is a non-renewable resource,and the uptake and utilization efficiency of soil phosphorus by plants is low.It is of great economic and ecological value to improve the efficiency of phosphorus absorption and utilization by grafting.The aim of this study was to screen the varieties of grafting tomato rootstocks with efficient use of phosphorus and to establish a light,simple and efficient evaluation technology system,which had theoretical and practical guiding effects on the breeding,demonstration and promotion of new rootstocks with efficient use of phosphorus.【Method】The scion tomato varieties of Qinglove No.1 were grafted on 25 rootstocks(G1-G25)or self-grafted(G0).The experiment was conducted in tomato seedling stage and whole growth stage.In the seedling stage test,the grafted seedlings were treated with normal phosphorus(Hoagland nutrient solution,NP)and low phosphorus(Hoagland nutrient solution with 10%phosphorus content,LP)by hydroponics.15 days later,16 indexes were measured,including growth and development,phosphorus absorption and utilization efficiency of grafted seedlings.In the whole growth period experiment,the grafted seedlings were still used as the test material.The phosphorus application level of the control group was set at 1272 kg·hm-2,and that of the LP treatment group was 50%of that of the control group.Nine indexes such as fresh weight of stem and leaf,yield and fruit quality were determined.Then,the correlation analysis,principal component analysis,membership function value analysis,cluster analysis,multiple regression analysis and other mathematical analysis models were used to screen the test materials with phosphorus efficient utilization type grafting tomato rootstock and to evaluate them comprehensively.【Result】The average coefficient of variation of indexes at seedling stage and whole growth stage under NP treatment was 9.74%and 2.85%,respectively,and the average coefficient of variation of indexes at seedling stage and whole growth stage under LP tre
作者
高梓元
胡京昂
张蓓蓓
巩彪
GAO ZiYuan;HU JingAng;ZHANG BeiBei;GONG Biao(State Key Laboratory of Crop Biology/College of Horticultural Science and Engineering,Shandong Agricultural University,Tai'an 271018,Shandong;Zhengzhou Vegetable Research Institute,Zhengzhou 450015)
出处
《中国农业科学》
CAS
CSCD
北大核心
2023年第14期2761-2775,共15页
Scientia Agricultura Sinica
基金
国家自然科学基金(U1903105)
山东省重点研发计划(2021CXGC010801)
日照市重点研发计划(2023ZDYF010119)。
关键词
番茄
嫁接
砧木
品种筛选
磷利用效率
tomato
grafting
rootstock
variety screening
phosphorus utilization efficiency
