scholarly journals Tomato Leaf Development and Distribution as Influenced by Leaf Removal and Decapitation

HortScience ◽  
1990 ◽  
Vol 25 (6) ◽  
pp. 681-684 ◽  
Author(s):  
Dennis R. Decoteau
Keyword(s):  
Leaf Development ◽  
Cultural Practices ◽  
Fruit Production ◽  
Tomato Leaf ◽  
Leaf Removal ◽  
Tomato Plants ◽  
Canopy Development ◽  
Apical Bud ◽  
Apical Buds ◽  
Axillary Leaf

The influence of leaf removal and decapitation (removal of apical bud and top two nodes) of determinate tomato (Lycopersicon esculentum Mill cv. Mountain Pride) plants on canopy development was investigated. Leaf removal and decapitation influenced subsequent leaf development and distribution, and early fruiting of greenhouse-grown tomato plants. `Removal of young axillary leaves increased the size of main (true) leaves in the middle and upper nodes, increased the number of nodes, and increased the number of early fruit produced. Removal of main leaves reduced axillary leaf development at nodes 5 and 9. Decapitation increased axillary leaf development in the middle and upper nodes and delayed early fruit production. These results suggest that cultural practices of tomatoes that remove leaves or apical buds to influence fruiting also affect canopy leaf development and distribution.

Use of Tomato leaf curl virus (TYLCV) truncated Rep gene sequence to engineer TYLCV resistance in tomato plants

2009 ◽  
Vol 53 (2) ◽  
pp. 99-104 ◽  
Author(s):  
H. Tamarzizt ◽  
S. Chouchane ◽  
R. Lengliz ◽  
D. Maxwell ◽  
M. Marrakchi ◽  
...  
Keyword(s):  
Gene Sequence ◽  
Tomato Leaf ◽  
Tomato Plants ◽  
Tomato Leaf Curl Virus ◽  
Tomato Leaf Curl ◽  
Leaf Curl Virus ◽  
Leaf Curl

2,4-Epibrassinolide mechanisms regulating water use efficiency and fruit production in tomato plants

2021 ◽  
Author(s):  
Lucas Baiochi Riboldi ◽  
Rafaella Zanetti Dias ◽  
Paulo Roberto de Camargo e Castro ◽  
Sérgio Tonetto de Freitas
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Fruit Production ◽  
Tomato Plants ◽  
Use Efficiency

Overexpression of LeNHX2 and SlSOS2 increases salt tolerance and fruit production in double transgenic tomato plants

2019 ◽  
Vol 135 ◽  
pp. 77-86 ◽  
Author(s):  
Mourad Baghour ◽  
Francisco Javier Gálvez ◽  
M. Elena Sánchez ◽  
M. Nieves Aranda ◽  
Kees Venema ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Fruit Production ◽  
Transgenic Tomato ◽  
Tomato Plants ◽  
Transgenic Tomato Plants

scholarly journals The effect of using grafted seedlings on the yield and quality of tomatoes grown in greenhouses 

2018 ◽  
Vol 45 (No. 2) ◽  
pp. 76-82 ◽  
Author(s):  
Rodica Soare ◽  
Maria Dinu ◽  
Cristina Babeanu
Keyword(s):  
Fruit Quality ◽  
Vegetative Growth ◽  
Morphological Characteristics ◽  
Fruit Production ◽  
Soluble Solids ◽  
Average Weight ◽  
Appreciable Effect ◽  
Tomato Plants ◽  
Production Characteristics

This study was aimed at observing the effect of the grafting of tomato plants on morphological (vegetative growth), production and nutritive characteristics (quantity and quality of production). For this purpose, the ‘Lorely F1’ cultivar was used as a scion grafted onto the ‘Beaufort’ rootstock. Plants were cultivated with a stem and two stems. The observations collected in this study were concerned with the characteristics of plant growth. The studied morphological characteristics were plant height, stem diameter and number of leaves, and the studied production characteristics were the characteristics of fructification and productivity (the average number of fruit per plant, the average weight of the fruit, production per plant). Particular attention was paid to the nutritional characteristics of the fruit, to the fruit quality (total soluble solids, total sugar, acidity, vitamin C, antioxidant activity (by the Trolox method) and the contents of lycopene and beta-carotene). The results showed that grafting positively influenced the growth and production characteristics. Grafting of tomato plants had an appreciable effect on the vegetative growth of the variant 2-grafted tomatoes with a stem. The best option in terms of productivity and production was the variant 3-grafted tomatoes with two stems, which yielded 9.2 kg per plant. Fruit quality was not improved in any of the grafted variants. 

scholarly journals Tomato leaf curl Gujarat virus, a New Begomovirus Species Causing a Severe Leaf Curl Disease of Tomato in Varanasi, India

2003 ◽  
Vol 93 (12) ◽  
pp. 1485-1495 ◽  
Author(s):  
S. Chakraborty ◽  
P. K. Pandey ◽  
M. K. Banerjee ◽  
G. Kalloo ◽  
C. M. Fauquet
Keyword(s):  
Tomato Leaf ◽  
Open Reading Frames ◽  
New Delhi ◽  
Tomato Plants ◽  
The Family ◽  
Infected Tomato ◽  
Tomato Leaf Curl ◽  
Full Length Genome ◽  
Severe Leaf ◽  
Leaf Curl

The biological and molecular properties of Tomato leaf curl Gujarat virus from Varanasi, India (ToLCGV-[Var]) were characterized. ToLCGV-[Var] could be transmitted by grafting and through whitefly transmission in a persistent manner. The full-length genome of DNA-A and DNA-B of ToLCGV-[Var] was cloned in pUC18. Sequence analysis revealed that DNA-A (AY190290) is 2,757 bp and DNA-B (AY190291) is 2,688 bp in length. ToLCGV-[Var] could infect and cause symptoms in tomato, pepper, Nicotiana benthamiana, and N. tabacum when partial tandem dimeric constructs of DNA-A and DNA-B were co-inoculated by particle bombardment. DNA-A alone also is infectious, but symptoms were milder and took longer to develop. ToLCGV-Var virus can be transmitted through sap inoculation from infected tomato plants to the above-mentioned hosts causing the same symptoms. Open reading frames (ORFs) in both DNA-A and DNA-B are organized similarly to those in other begomoviruses. DNA-A and DNA-B share a common region of 155 bp with only 60% sequence identity. DNA-B of ToLCGV-[Var] shares overall 80% identity with DNA-B of Tomato leaf curl New Delhi virus-Severe (ToLCNDV-Svr) and 75% with ToLCNDV-[Lucknow] (ToLCNDV-[Luc]). Comparison of DNA-A sequence with different begomoviruses indicates that ToLCGV-[Var] shares 84% identity with Tomato leaf curl Karnataka virus (ToLCKV) and 66% with ToLCNDV-Svr. ToLCGV-[Var] shares a maximum of 98% identity with another isolate of the same region (ToLCGV-[Mir]; AF449999) and 97% identity with one isolate from Gujarat (ToLCGV-[Vad]; AF413671). All three viruses belong to the same species that is distinct from all the other geminivirus species described so far in the genus Begomovirus of the family Geminiviridae. The name Tomato leaf curl Gujarat virus is proposed because the first sequence was taken from an isolate of Gujarat, India.

scholarly journals Presence of Anti-cystatin C–positive Dendritic Cells or Macrophages and Localization of Cysteine Proteases in the Apical Bud of the Enamel Organ in the Rat Incisor

2005 ◽  
Vol 53 (5) ◽  
pp. 643-651 ◽  
Author(s):  
Sumio Nishikawa
Keyword(s):  
Dendritic Cells ◽  
Cystatin C ◽  
Cysteine Protease ◽  
Cathepsin L ◽  
Cysteine Proteases ◽  
Cysteine Protease Inhibitor ◽  
Enamel Organ ◽  
Apical Bud ◽  
Apical Buds ◽  
Proliferation And Differentiation

Cystatin C, a cysteine protease inhibitor, was examined in the apical buds of rat incisors by immunohistochemistry, because in transition and maturation zones most of the dendritic cells in the papillary layer are anti-cystatin C–positive. Anti-cystatin C–labeled cells were sparse and localized to the proliferation and differentiation zones, constituting the apical bud of 5-week-old rat incisors. These cells were considered macrophages or dendritic cells, based on their reactivity with OX6 and ED1, as well as their ultrastructure. Basement membrane at the periphery of apical bud was also labeled by anti-cystatin C antibody. The apical buds included a few apoptotic fragments and weak reactivity with antibody to cathepsin L, a cysteine protease. Reactivity to anti-cystatin C and anti-cathepsin ∗∗∗L antibodies was also detected in the apical bud of newborn rat incisors. These results suggest that the cystatin C–positive macrophages or dendritic cells are involved in normal incisor formation. They may be related to the clearance of apoptotic cells or protection from putative cysteine protease activity.

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