山东农业大学学报(自然科学版)
山東農業大學學報(自然科學版)
산동농업대학학보(자연과학판)
JOURNAL OF SHANDONG AGRICULTURAL UNIVERSITY(NATURAL SCIENCE)
2015年
4期
509-513
,共5页
水分胁迫%油茶容器苗%生理特性
水分脅迫%油茶容器苗%生理特性
수분협박%유다용기묘%생리특성
Water stress%Camellia oleifera seedlings%physiological characteristics
选择“湘林5号”一年生油茶容器苗为试验材料进行水分胁迫处理,设置8个水分处理组,研究水分胁迫下容器苗的生理特性。结果表明,叶片相对电导率、MDA和可溶性糖含量整体上表现出逐渐上升的趋势,并都在胁迫70 d时达到最大值,分别为56.357%、13.654 mmol?g-1和0.295 mg?g-1。POD活性、SOD活性、CAT活性、根系活力表现出先上升后下降的趋势,叶绿素含量表现出逐渐下降的趋势,在胁迫70 d降至最低值0.552 mg·g-1。说明在水分胁迫的前期对于油茶苗的影响很小;在胁迫的中期,油茶苗表现出较为复杂的变化过程;在胁迫的后期对油茶影响严重。因此,“湘林5号”具有一定抗旱能力,但持续干旱影响油茶苗生长,应及时浇水。
選擇“湘林5號”一年生油茶容器苗為試驗材料進行水分脅迫處理,設置8箇水分處理組,研究水分脅迫下容器苗的生理特性。結果錶明,葉片相對電導率、MDA和可溶性糖含量整體上錶現齣逐漸上升的趨勢,併都在脅迫70 d時達到最大值,分彆為56.357%、13.654 mmol?g-1和0.295 mg?g-1。POD活性、SOD活性、CAT活性、根繫活力錶現齣先上升後下降的趨勢,葉綠素含量錶現齣逐漸下降的趨勢,在脅迫70 d降至最低值0.552 mg·g-1。說明在水分脅迫的前期對于油茶苗的影響很小;在脅迫的中期,油茶苗錶現齣較為複雜的變化過程;在脅迫的後期對油茶影響嚴重。因此,“湘林5號”具有一定抗旱能力,但持續榦旱影響油茶苗生長,應及時澆水。
선택“상림5호”일년생유다용기묘위시험재료진행수분협박처리,설치8개수분처리조,연구수분협박하용기묘적생리특성。결과표명,협편상대전도솔、MDA화가용성당함량정체상표현출축점상승적추세,병도재협박70 d시체도최대치,분별위56.357%、13.654 mmol?g-1화0.295 mg?g-1。POD활성、SOD활성、CAT활성、근계활력표현출선상승후하강적추세,협록소함량표현출축점하강적추세,재협박70 d강지최저치0.552 mg·g-1。설명재수분협박적전기대우유다묘적영향흔소;재협박적중기,유다묘표현출교위복잡적변화과정;재협박적후기대유다영향엄중。인차,“상림5호”구유일정항한능력,단지속간한영향유다묘생장,응급시요수。
s: Seedlings of Xianglin No.5 were chosen as experimental materials, which were grown in 8 substrates with different water contents, and the difference of physiological characteristics of Camellia oleifera seedlings was analyzed. The results that under water stress condition the relative leaf conduction rate, MDA content and soluble sugar content were increasing in general and reached the highest values of 56.357%,13.654 mmol·g-1, 0.295mg·g-1, respectively in 70 d. POD activity, SOD activity, CAT activity, root activity at first increased, then decreased, while the chlorophyll content was decreasing to the lowest value of 0.552 mg·g-1 in 70 d. In conclusion, C.oleifera seedlings grew well under the early water stress, under the mid water stress seedlings showed a more complex process of change; under the late stage stress the seedlings seriously injured. It is important that C. oleifera seedlings of Xianglin No.5 is in drought tolerance, but it should be watered on time;otherwise their growth will be affected.