Comparative Transcriptome and Hormone Analysis of Mature Leaves and New Shoots in Tea Cuttings (Camellia sinensis) among Three Cultivars with Different Rooting Abilities

Author(s):  
Kai Fan ◽  
Yujie Shi ◽  
Danni Luo ◽  
Wenjun Qian ◽  
Jiazhi Shen ◽  
...  
2018 ◽  
Vol 229 ◽  
pp. 41-52 ◽  
Author(s):  
Chuan Yue ◽  
Hong-Li Cao ◽  
Dan Chen ◽  
Hong-Zheng Lin ◽  
Zan Wang ◽  
...  

Author(s):  
A. Peerally

Abstract A description is provided for Calonectria theae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Acacia spp., Albizia, Camellia sinensis, Eucalyptus spp. and Rhododendron (Azalea). DISEASE: Causes the well-known 'Cercosporella disease' of tea bushes. Spots on young leaves are at first brown or black and in humid weather enlarge and coalesce. On mature leaves spots are at first black then grey or greyish-white with a purplish margin. On fully mature leaves spots are brown or black then turn greyish. Tea bushes may be severely defoliated. Also causes root discoloration but not mortality of azaleas (52, 1935). GEOGRAPHICAL DISTRIBUTION: Ceylon and USA. Other records are of doubtful authenticity TRANSMISSION: By wind-borne conidia and ascospores in Ceylon. Transmission from Acacia decurrens, used as a shade tree, frequently reported.


Horticulturae ◽  
2021 ◽  
Vol 7 (12) ◽  
pp. 544
Author(s):  
Lifeng Ma ◽  
Shuangfeng Jiang ◽  
Min Deng ◽  
Lize Lv ◽  
Ze Xu ◽  
...  

The effect of thermal condition on the uptake of autumn and winter applied N and its subsequent utilization in spring tea (Camellia sinensis) was investigated by applying 15N enriched urea as single or split applications between October and February in two commercial plantations at Xingyang of Henan province and Yongchuan of Chongqing with different thermal conditions. The proportion of N derived from 15N-labeled urea (Ndff%) in fibrous root and mature leaves 15 days after application at Xingyang and the Ndff% of mature leaves on the day of the first spring tea harvest at both sites were the highest in the single October application. The Ndff% of the following spring tea was also the highest in the single October application at both sites. The results showed that application of N fertilizer in October relative to other later months most significantly improves the accumulation of plant N reserves and consequently contributes more significantly to the early spring tea. Such timing effect was related to the thermal condition, i.e., the growing degree days (°C•d, T > 8 °C) between the dates of fertilization and harvest of young shoots, which represents the combining effect of the temperature and the residence time of N fertilizer in the soil.


2013 ◽  
Vol 23 (03n04) ◽  
pp. 119-125 ◽  
Author(s):  
Taisuke Yoshida ◽  
Tsuguhisa Fujiwara ◽  
Manabu Saito ◽  
Yoichi Haruyama ◽  
Keisuke Yasuda

The concentration and distribution of fluorine in mature leaves of Camellia sinensis were determined using micro-PIGE. The elemental concentration was measured as 2210 ± 450 ppm. Fluorine showed clear localization in the epidermis. Fluorine was distributed uniformly in the upper epidermis, suggesting that fluorine was localized in the cytoplasm. On the other hand, extremely concentrated areas of fluorine were observed in the lower epidermis.


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