Effects of Water Stress on Dry Matter Distribution of Two Stock-scion Apple Seedlings
In order to study the dynamic changes of dry matter accumulation of two stock-scion apple seedlings aboveground and underground parts,and to compare the diversity of dry matter distribution between them,an experiment with two types of stock-scions and different water stress was carried out in a waterproofed shelter from April to November in 2011.It was randomized block design with two factors (scion / rootstock combinations,moisture).Moisture had four treatments,70%-85% (CK) of field maximum moisture capacity (27.15%),55%-70% (LWS),40%-55% (MWS),and 25%-40% (HWS).With the water stress time going on,the aboveground biomass,underground biomass,total biomass and the root-shoot ratio of two different stock-scion apple seedlings in different water conditions all presented a gradual increase trend,and the biomass accumulation rate became gradually smaller and the root-shoot ratio became gradually larger with the enhance of water stress.The root-shoot ratio of KM and KP under water stress increased by 5.16% and 16.90%,15.50% and 24.10%,29.31% and 36.71% than CK,respectively.The root-shoot ratio of KP was 6.01%~18.18% higher than that of KM under the same water treatment.
Apple Dry matter Distribution water stress the root-shoot ratio
Gao Ju-hong Song Kai Zhang Ji-xiang Feng Zhi-wen
State Key Laboratory of Crop Biology,National Research Center for Apple Engineering and Technology & College of Horticultural Science and Engineering,Shandong Agricultural University,Tai an,Shandong Provence,China;Institute of Geographic Sciences and Natural Resources Research,CAS
国际会议
The Third Conference on Horticulture Science and Technology (2012第三届园艺科学与技术学术会议(CHST2012))
北京
英文
228-232
2012-11-24（万方平台首次上网日期，不代表论文的发表时间）