[1]闫梦,王楚天,晏雨鸿,等. 油茶树体钾素含量变化规律及其与产油量的通径分析[J].西北林学院学报,2018,33(4):83-88.[doi:10.3969/j.issn.1001-7461.2018.04.13]
　YAN Meng,WANG Chu-tian,YAN Yu-hong,et al. Changes of Potassium Content and the Path Analysis on Oil Production of Camellia oleifera Trees[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(4):83-88.[doi:10.3969/j.issn.1001-7461.2018.04.13]
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 油茶树体钾素含量变化规律及其与产油量的通径分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第4期
页码:
83-88
栏目:
出版日期:
2018-07-31

文章信息/Info

Title:
 Changes of Potassium Content and the Path Analysis on Oil Production of Camellia oleifera Trees
文章编号:
1001-7461(2018)04-0083-06
作者:
 闫梦1; 2; 王楚天1; 2; 晏雨鸿3; 王新新1; 2; 胡冬南1; 2*
 (1.江西农业大学 林学院，江西 南昌 330045；2.江西省森林培育重点实验室，江西 南昌 330045; 3.江西省林木育种中心，江西 南昌 330045)
Author(s):
 YAN Meng1; 2; WANG Chu-tian1; 2; YAN Yu-hong3; WANG Xin-xin1; 2; HU Dong-nan1; 2*
 (1.College of Forestry,Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China; 2.Key Laboratory of Tree breeding and Cultivation of Jiangxi Province,Nanchang,Jiangxi 330045,China; 3.Tree Breeding Center of Jiangxi，Nanchang,Jiangxi 330045,China)
关键词:
 ; 油茶; 全K含量; 品种差异; 产油量; 通径分析
Keywords:
Camellia oleifera;  total K content;  species difference;  oil production;  path coefficient analysis
分类号:
S794.4
DOI:
10.3969/j.issn.1001-7461.2018.04.13
文献标志码:
A
摘要:
 为了解油茶树体K含量年动态变化及其与产油量之间的关系，为科学施肥提供理论依据，以3个油茶品种长林3、长林4和长林40为试验材料，定期调查测定其叶、花、果积累的K养分含量，分析油茶发育过程中K含量变化，并采用通径分析探讨其与产油量之间的关系。结果表明:1）油茶春梢萌发前，叶片全K含量最低，春梢生长结束时，达到第1个高峰，之后下降，进入花芽分化期和果实膨大期，叶片全K含量再次上升，到油脂转化关键时期开始下降，休眠期处于相对稳定状态；花芽和果实全K含量整体呈现不断上升趋势。2）油茶春梢叶片全K含量与当年产油量负相关，与第2年产油量正相关；花芽全K含量与产油量正相关，果实膨大期到成熟期果实全K含量与产油量达到显著正相关；长林40果实全K含量显著较高，长林4的2 a平均亩产油量显著高于另外2个品种，与产油量最低的长林40极差达54.01 kg。3）叶片和花芽全K含量对当年产油量为直接负效应，果实全K含量对当年产油量为直接正效应且作用最大。进入果实膨大期可以增施K肥以提高果实全K含量，从而提高产油量，在品种选育时长林4是较为优良的选择。
Abstract:
 In order to understand the dynamic changes of total optansium content of camellia trees and the relationship with oil production,and to provide theoretical basis for scientific balance formula fertilization,three camellia cultivars were used as research objects,including Changlin No.3,No.4,and No.40.Regular surveys were conducted to determine total K content in the leaves,flowers,fruits.Path analysis were adopted to explore the relationship between K content and oil production.The results were that 1) before the sprouting of spring shoots,the total K content in leaves was the lowest,and it reached the first peak at the end of the spring tip growth,then began to decline,it increased again after entering flower bud differentiation period,fell then,and relatively stable in dormant period.The total K contents in flower and fruit presented the rising trend.2) Total K content in spring leaves was negatively correlated to the oil production in the current year,and positively correlated to the oil production in the second year.The total K content in flower buds was correlated to the oil production,and the total K content in fruit expanding and mature periods were significantly and positively correlated to oil production.The total K content in fruits of Changlin No.4 was significantly higher,and the two-year average oil production of Changlin No.4 was significantly higher than other two cultivars,among which.Changlin 40 was significantly lower and was 54.01 kg per mu lower than Changlin No.4.3) Total K content in leaves and flowers in winter showed direct negative effect on oil production,the total K content in fruit was directly positive to oil production and the effect was the largest.Therefore,entering the fruit expansion stage,to increase the total K content of fruits could increase the oil production,when breeding varieties,Changlin No.4 was a better choice.

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备注/Memo

备注/Memo:
 收稿日期：2017-10-10修回日期：2018-01-02
基金项目：国家自然科学基金项目(31560218)。
作者简介：闫梦，女，硕士，研究方向：林木遗传育种。E-mail:1528034801@qq.com
*通信作者：胡冬南，女，教授，博士生导师，研究方向：林木遗传育种。E-mail:dnhu98@163.com
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