Vegetative propagated plants of 6 tea cultivars were sand cultured in pots and fertilized with nutrient solution containing 0, 0.06, 0.60 and 6.00βmmol/L nitrogen. The growth characteristics of tea plants were analyzed under the four nitrogen levels. The results showed: (1)Plant height, root FW, shoot FW and SPAD value of leaves decreased significantly under nitrogen deficiency stress. Total biomass showed positive correlations with root FW and root shoot radio (P<0.05). (2)The nitrogen utilization abilities were varied widely with the genotypes of tea plant. Among 6 tea cultivars, ‘Fudingdabaicha’ and ‘Chungui’ were identified to the genotypes with high use efficiency under the low nitrogen content. (3)The root shoot ratios were higher under nitrogen deficiency stress and the maximal variation range was 20.97% as in ‘Tieguanyin’. Root shoot ratio differed significantly by genotypes. The root shoot ratios for ‘Tieguanyin’ and ‘Chungui’ were 0.71 and 1.81, respectively. (4)It was demonstrated that root shoot ratio and SPAD values under nitrogen deficiency stress could be used as screening indexes for low-N tolerant tea cultivar.
WANG Liyuan
,
CHEN Changsong
,
LIN Zhenghe
,
WEI Kang
,
WU Liyun
,
FENG Suhua
,
CHENG Hao
. Growth Characteristic of Different Cultivars of Tea Plant in Response to Nitrogen Contents[J]. Journal of Tea Science, 2015
, 35(5)
: 423
-428
.
DOI: 10.13305/j.cnki.jts.2015.05.003
[1] Zhang H, Forde B.An Arabidopsis MADS box gene that controls nutrient-induced changes in root architecture[J]. Science, 1998, 279(5349): 407-409.
[2] Walch L, Neumann G, Bangerth F, et al. Rapid effects of nitrogen form on leaf morphogenesis in tobacco[J]. J Exp Bot, 2000, 51(343): 227-237.
[3] Alboresi A, Gestin C, Leydecker M, et al. Nitrate, a signal relieving seed dormancy in Arabidopsis[J]. Plant Cell Environ, 2005, 28(4): 500-512.
[4] Stitt M, Muller C, Matt P, et al. Steps towards an integrated view of nitrogen metabolism[J]. J Exp Bot, 2002, 53(370): 959-970.
[5] 汪洪, 高翔, 陈磊, 等. 硝态氮供应下植物侧根生长发育的响应机制[J]. 植物营养与肥料学报, 2011, 17(4): 1005-1011.
[6] 阮建云, 王晓萍, 崔思真, 等. 茶树品种间氮素营养的差异及其机制的研究[J]. 中国茶叶, 1993, 15(3): 35-37.
[7] 王新超, 杨亚军, 陈亮, 等. 不同品种茶树氮素效率差异研究[J]. 茶叶科学, 2004, 24(2): 93-98.
[8] 王新超, 杨亚军, 陈亮, 等. 茶树氮素利用效率相关生理生化指标初探[J]. 作物学报 2005, 31(7): 926-931.
[9] 林郑和, 钟秋生, 陈常颂, 等. 缺钾对茶树幼苗叶片叶绿素荧光特性的影响[J]. 植物营养与肥料学报, 2012, 18(4): 974-980.
[10] 林郑和, 陈常颂, 邬龄盛. 低磷胁迫下茶树根系CS基因的克隆及表达分析[J]. 茶叶科学, 2010, 30(5): 362-366.
[11] Lin Z, Qi Y, Chen L, et al. Effects of phosphorus supply on the quality of green tea[J]. Food Chemistry, 2012,130(4): 908-914.
[12] 魏海燕,张洪程,张胜飞,等. 不同氮利用效率水稻基因型的根系形态与生理指标的研究[J]. 作物学报, 2008, 34(3): 429-436.
[13] 刘婷婷,樊明寿,李春俭.不同氮效率玉米自交系对氮素供应的反应[J]. 华北农学报, 2005, 20(3): 83-86.
[14] 杨亦扬, 马立锋, 石元值, 等. 叶绿素仪(SPAD)在茶树氮素营养诊断中的适用性研究[J]. 茶叶科学, 2008, 28(4): 301-308.
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