The Role of Polar Movement of IAA in the Development of the Peg in Cucumis sativus L.

1975 ◽  
Vol 136 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Allan Witztum ◽  
Mordechai Gersani
Keyword(s):  
Cucumis Sativus ◽  
Cucumis Sativus L ◽  
Polar Movement

scholarly journals Role of insect visits on cucumber (Cucumis sativus L.) yield

2018 ◽  
Vol 4 (2) ◽  
pp. 81-88
Author(s):  
MS Hossain ◽  
F Yeasmin ◽  
MM Rahman ◽  
S Akhtar ◽  
MA Hasnat
Keyword(s):  
Cucumis Sativus ◽  
Honey Bee ◽  
Foraging Behaviour ◽  
Apis Cerana ◽  
Bee Pollination ◽  
Cucumis Sativus L ◽  
M 10 ◽  
Hand Pollination ◽  
Insect Visitors

The foraging activities of insect visitors on cucumber (Cucumis sativus L.) were studied. The insect visitors in decreasing order of abundance were: Formica sp.>Apis mellifera>Apis cerana>syrphids≥Apis dorstata. The activity of insects was peaked at 08.00-09.00 am. The foraging behaviour of A. mellifera was also studied. The bees spent significantly more time per flower during morning hours (sec/flower) and foraged significantly fewer flowers (7.9 flowers/min) compared to evening hours. There were significantly more nectar foragers (6.03/m²/10 min) than pollen foragers (5.16/m²/10 min). Most pollen foragers were observed during morning hours (6.59/m²/10 min) whereas nectar foragers were most active during noon hours (6.63/m²/10 min). Highest fruit set was observed in hand pollination (70.68%). Percentage of misshapen fruits was maximum in without honey bee pollination (24.35%). Without honey bee pollination resulted in significantly lowest percentage of healthy fruits (75.25%). Hand pollination ranked highest among the three forms of pollination in respective of fruits (985.13 g), number of seeds per fruit (425.22), fruit diameter (27.1 cm), fruit length (26.7 cm) and weight of 1000-seeds (28.64 g). J. Biodivers. Conserv. Bioresour. Manag. 2018, 4(2): 81-88

Role of Silicon Dioxide Nano Fertilizer in Mitigating Salt Stress on Growth, Yield and Chemical Composition of Cucumber (Cucumis sativus L.)

2017 ◽  
Vol 12 (3) ◽  
pp. 130-135 ◽  
Author(s):  
Abdelazim Yassen ◽  
Emam Abdallah ◽  
Maybelle Gaballah ◽  
Sahar Zaghloul
Keyword(s):  
Salt Stress ◽  
Chemical Composition ◽  
Silicon Dioxide ◽  
Cucumis Sativus ◽  
Growth Yield ◽  
Cucumis Sativus L

The role of the cotyledons in the photocontrol of hypocotyl extension in Cucumis sativus L.

Planta ◽  
1974 ◽  
Vol 117 (1) ◽  
pp. 57-66 ◽  
Author(s):  
M. Black ◽  
Janet E. Shuttleworth
Keyword(s):  
Cucumis Sativus ◽  
Cucumis Sativus L

Role of phytochrome B in organ formation processes in Cucumis sativus L.

2013 ◽  
Vol 44 (3) ◽  
pp. 135-138
Author(s):  
M. I. Sysoeva ◽  
E. F. Markovskaya
Keyword(s):  
Cucumis Sativus ◽  
Formation Processes ◽  
Phytochrome B ◽  
Cucumis Sativus L ◽  
Organ Formation

Role of the antioxidant system in the regulation of the chlorophyll biosynthesis pathway in the vascular plant Cucumis sativus

2018 ◽  
Vol 45 (4) ◽  
pp. 464
Author(s):  
Aarti Dhepe ◽  
Komal Joshi
Keyword(s):  
Cucumis Sativus ◽  
Antioxidant System ◽  
Chlorophyll Biosynthesis ◽  
Vascular Plant ◽  
Protoporphyrin Ix ◽  
Thioredoxin Reductase ◽  
Ros Generation ◽  
Biosynthesis Pathway ◽  
Cucumis Sativus L

In this study, the role of the antioxidant system has been examined in the regulation of the chlorophyll biosynthesis pathway in the vascular plant Cucumis sativus L. To generate reactive oxygen species (ROS), etiolated (E) and green (G) cucumber cotyledons were treated with methyl viologen (MV) or were exposed to high light (HL, 400–500 µE m–2 s–1). ROS generation was confirmed by measuring proline and H2O2 concentrations. With the effects of the MV- and HL-induced oxidative stress, it was observed that the chlorophyll biosynthesis pathway was severely affected in the HL-treated etiolated cotyledons (E-HL), MV-treated etiolated cotyledons (E-MV) and in MV-treated green cotyledons (G-MV) at 5-amino levulinic acid (ALA) as well as at protoporphyrin IX and Mg-protoporphyrin IX monomethyl ester levels. The antioxidant assays conducted showed that the ascorbate peroxidase (APX) activity had decreased in the E-HL, E-MV and G-MV cotyledons along with the levels of ascorbate and lutein. A decrease in the NADPH-dependent thioredoxin reductase (NTRC) was also observed in the MV-treated cotyledons with a significant impairment of the catalase activity in the E-HL cotyledons. Conversely, in the HL-treated green i.e. G-HL cotyledons, where the accumulation of H2O2 and the inhibition of chlorophyll biosynthesis were not observed, an increase in the levels of APX, NTRC, peroxiredoxin, ascorbate, glutathione and lutein was noted. Thus, the results obtained suggested that the antioxidant system could influence the flow of the chlorophyll biosynthesis pathway through maintaining the levels of H2O2.

scholarly journals Role of leaf apoplast in silicon-mediated manganese tolerance of Cucumis sativus L.

2002 ◽  
Vol 25 (4) ◽  
pp. 549-555 ◽  
Author(s):  
H. Rogalla ◽  
V. Römheld
Keyword(s):  
Cucumis Sativus ◽  
Cucumis Sativus L ◽  
Manganese Tolerance ◽  
Leaf Apoplast

The regulatory role of silicon on carbohydrate metabolism in Cucumis sativus L. under salt stress

2016 ◽  
Vol 406 (1-2) ◽  
pp. 231-249 ◽  
Author(s):  
Yongxing Zhu ◽  
Jia Guo ◽  
Ru Feng ◽  
Jianhua Jia ◽  
Weihua Han ◽  
...  
Keyword(s):  
Salt Stress ◽  
Carbohydrate Metabolism ◽  
Cucumis Sativus ◽  
Regulatory Role ◽  
Cucumis Sativus L
Sign in / Sign up

Export Citation Format

Share Document