Spraying 6-BA could alleviate the harmful impacts of waterlogging on dry matter accumulation and grain yield of wheat

<b>Fig. 1. </b>Daily sunshine duration, daily average temperature and daily rainfall during the wheat growth seasons at experimental station from 2011 to 2013. <b>Fig. 2. </b>Rainfall in ten days of each month during the whole wheat season from Jingzhou Weather Station from 1983 to 2012. <b>Fig. 3.</b> The effect of different treatments on the dry matter accumulation at maturity<b></b> <b>Fig. 4. </b>The effect of different treatments on photosynthetic rate from flag leaf after booting stage <b>Fig. 5.</b> The effect of different treatments on MDA content in flag leaf (a, c) and the third leaf from top (b,d) at 25 DAA (2011-2012 and 2012-2013).<b>Table 1.</b> The nutrient statuses of soil in the top 20 cm layer.<b>Table 2.</b> Effect of different treatments on grain yield, kernel number per spike and 1000 kernel weight.

图1. 2011-2013年试验站小麦生育期内每日日照时长、日均气温与日降雨量。图2. 1983-2012年荆州气象站监测的全小麦生育期内各月旬降雨量。图3. 不同处理对小麦成熟期干物质积累量的影响。图4. 不同处理对孕穗期后旗叶光合速率的影响。图5. 不同处理对花后25天（2011-2012及2012-2013季）旗叶（a、c）与倒三叶（b、d）丙二醛（MDA）含量的影响。表1. 0~20 cm土层土壤养分状况。表2. 不同处理对小麦籽粒产量、穗粒数及千粒重的影响。