scholarly journals Effects of Fosetyl-Al, a fungicide on meiosis of Lycopersicon esculentum Mill.

1970 ◽  
Vol 39 (2) ◽  
pp. 237-240 ◽  
Author(s):  
Ilkay Özturk Çali ◽  
Teoman Kesercioglu

Effects of Fosetyl-Al (80% Aliette WG 800), widely applied on tomato plants (Lycopersicon esculentum Mill.) grown in greenhouse against Phytophthora infestans revealed that at recommended dosage (200 g/100 l water) and the double dosage (400 g/100 l water), the fungicide causes various anomalies in pollen meiosis. Key words: Fosetyl-A;, Fungicide; Lycopersicon esculentum; Meiosis; Pollens DOI: 10.3329/bjb.v39i2.7486 Bangladesh J. Bot. 39(2): 237-240, 2010 (December)

1970 ◽  
Vol 38 (2) ◽  
pp. 115-118 ◽  
Author(s):  
Ilkay Öztürk Çali ◽  
Feyza Candan

Effects of Agri Fos 400 (Mono and di-potassium phosphanate), a fungicide widely used on tomatoes grown in greenhouses in Turkey against Phytophthora infestans were studied on the morphology and viability of tomato (Lycopersicon esculentum Mill.) pollens. The fungicide was applied on tomato plants at recommended dosage (4 ml/l water) and double the recommended dosage (8 ml/l water). The fungicide caused changes in the morphological structures of pollens. Some pollen morphological structures that are not observed in the control group were encountered in the pollens due to application of Agri Fos 400 in equatorial view at 8 ml/l and in polar view at 4 ml/l. Level of pollen viability decreased as the dosage increased.   Key words: Fungicide; Phytophthora infestans; Tomato; Pollen morphology; Viability DOI: 10.3329/bjb.v38i2.5134 Bangladesh J. Bot. 38(2): 115-118, 2009 (December)


1970 ◽  
Vol 38 (1) ◽  
pp. 7-11
Author(s):  
Ilkay Öztürk Çali

Effects of Equation Pro (22.5% Famoxadone + 30% Cymoxanil), a fungicide widely used on tomatoes (Lycopersicon esculentum Mill.) grown in greenhouses in Turkey against Phytopthora infestans and Alternaria solani, were studied on the morphology and fertility of tomato pollens. The fungicide was applied to tomatoes grown in pots in a greenhouse at recommended dosage (0.4 g/l water) and double the recommended dosage (0.8 g/l water). At the recommended dosage of Equation Pro, pollens were affected but at double the recommended dose, fertility is decreased to 41% with morphological deformity and thinner wall layers. Key words: Fungicide; Lycopersicon esculentum; Pollen; Morphology; Fertility DOI: 10.3329/bjb.v38i1.5112 Bangladesh J. Bot. 38(1): 7-11, 2009 (June)   


RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34392-34400 ◽  
Author(s):  
Maomao Hou ◽  
Fenglin Zhong ◽  
Qiu Jin ◽  
Enjiang Liu ◽  
Jie Feng ◽  
...  

Alternate partial root-zone irrigation has profound impacts on the crop uptake of residual nitrogen originated from the previous season.


1997 ◽  
Vol 77 (2) ◽  
pp. 267-272
Author(s):  
D. Iraqi ◽  
L. Gauthier ◽  
M. Dorais ◽  
A. Gosselin

The objective of this study was to determine the effect of four vapour pressure defecits (VPD) and three photoperiods on growth, yield and mineral composition of tomato plants. A factorial experiment was conducted from 28 July 1993 to 30 May 1994 in a greenhouse at Laval University Envirotron in Québec, Canada. Four day/night VPD treatments were compared: 1) 0,4/0,4 kPa, 2) 0,97/0,4 kPa, 3) VPD adjusted to a transpiration rate of 800 mL d−1 plant−1 and 4) 0,97/0,97 kPa. For each VPD treatment, three photoperiods were used: 1) 12 h, 2) 14 h and 3) seasonal progressive photoperiod of 12 to 16 h. The highest VPD significantly increased total and marketable yield, biomass and Ca, Mg, K, N and P contents of the leaves. Results obtained with adjusting the VPD to transpiration needs showed no significant differences with those obtained with the highest VPD. Photoperiod effects were not significant. Key words: Vapour pressure defecit, tomato, Lycopersicon esculentum, biomass, mineral analysis


2014 ◽  
Vol 42 (2) ◽  
pp. 361-365
Author(s):  
Ilkay Öztürk Çali ◽  
Reyza Candan

The cytogenetic effects of activator Act-2 (based in compounds of addition hydro soluble of K-vitamin group a new and specific organic metabolic activator) on meiosis of tomato (Lycopersicon esculentum Mill.) were studied. The activator was applied to tomato plant grown in greenhouse at the dosage (150 cc/100 water) recommended by the manufacturing company and double the recommended dosage (300 cc/100 water) as well. It was observed that all dosages of the activator gave rise to some changes in cell shapes, chromosome structures, cell division patterns and cell sizes of tomato pollen. As a consequence of chromosomal anomalies sterile pollens were produced that affected yield negatively. DOI: http://dx.doi.org/10.3329/bjb.v42i2.18045 Bangladesh J. Bot. 42(2): 361-365, 2013 (December)


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