Germination and decreased growth of Kochia scoparia in relation to its autoallelopathy

1979 ◽  
Vol 57 (10) ◽  
pp. 1083-1088 ◽  
Author(s):  
M. A. K. Lodhi
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Growth Retardation ◽  
Extended Period ◽  
High Density ◽  
Kochia Scoparia ◽  
Almost All ◽  
Radicle Length

The autotoxic properties of Kochia scoparia phytotoxins on its germination and on radicle and seedling growth were studied. Inhibition of seed germination, a commonly known allelopathic phenomenon, did not occur and seeds reached close to 100% germination within 24 h when tested against different phytotoxins isolated from Kochia leaves regardless of the concentrations applied. Similarly, the radicle length of Kochia seeds measured was not significantly affected. However, when radicles were allowed to grow for an extended period of time in various concentrations of isolated phytotoxins, their length was significantly reduced in almost all cases. Such autotoxic growth retardation patterns were more pronounced in 10-day-old seedlings. It appears that Kochia phytotoxins do not inhibit germination but retard growth later, which also supports the high density but drastically reduced growth of Kochia in its 2nd year of revegetation in the field. The autotoxins isolated and identified from Kochia leaves were phenolics and flavanoids.

scholarly journals TiO2 Nanoparticles Enhancing Germination, Growth and Yield of Rice

2020 ◽  
pp. 25-30
Author(s):  
Keya Debnath ◽  
Aparajita Das ◽  
Bimal Das ◽  
J. Karfoma
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Growth Parameters ◽  
Block Design ◽  
Growth And Yield ◽  
Yield Traits ◽  
Dose Limit ◽  
Tio2 Nps ◽  
Randomized Block Design ◽  
Almost All

Background: Titanium dioxide (TiO2) NPs are used in agriculture to increase seeds germination and seedlings growth and can improve yield by approximately 30%. The present experimental investigation demonstrated the effect of nanoparticles (NPs) Anatase - TiO2 (<100 nm size) on germination, seedling growth and yield attributing traits of rice. Methods: Rice seeds were treated with six concentrations (0, 10, 20, 50, 80 and 100 ppm) of nanoTiO2 and placed in Petri plates. Some amount was sown in the field following Randomized Block Design (RBD) with three replications for each treatment. Results: Application of TiO2 NPs significantly enhanced germination, seedling growth and yield traits for most of the concentrations as compared to the control. About 85% significant improvement of seed germination occurred by 20 ppm of TiO2 NPs. The results of TiO2 treated samples were higher in almost all the growth parameters, but the treatment was highly effective for 20 ppm followed by 50 ppm for grain yield. The response to nano-treatment on seed germination along with yield traits suggested the optimum TiO2 dose limit on these characters on rice.

scholarly journals Effect of Seed Priming with Proline on Germination and Seedling Growth of Mungbean under Salt Stress

2019 ◽  
pp. 15-18
Author(s):  
Muhammad Abdus Sobahan
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Seedling Growth ◽  
Seed Priming ◽  
Germination Percentage ◽  
Fresh Weight ◽  
Seed Vigour ◽  
Control Seed ◽  
Vigour Index ◽  
Radicle Length

Seed priming is a pre-sowing treatment that enhances germination performance and stress tolerance of germinating seeds. The effect of seed priming with proline on germination and seedling growth of mungbean (Vigna radiata L.) under salt stress was investigated. The experiment carried out in completely randomized design with three replications in May 2018 at the Research Laboratory of the School of Agriculture and Rural Development, Bangladesh Open University, Gazipur, Bangladesh. Salt stress at 5 dSm-1 decreased seed germination percentage, plumule length, radicle length, plumule fresh weight, radicle fresh weight and seed vigour index compared to control. Seed priming with proline increased germination percentage (53.84%), plumule length, radicle length, plumule fresh weight, radicle fresh weight and seed vigour index under salt stress. The results suggested that seed priming with proline could effectively alleviate the inhibitory effects of salt stress on seed germination and seedling growth of mungbean. South Asian J. Agric., 7(1&2): 15-18

Sodium chloride effects on lipase activity in germinating rape seeds

2000 ◽  
Vol 28 (6) ◽  
pp. 899-902 ◽  
Author(s):  
D. D. Ben Miled ◽  
M. Zarrouk ◽  
A. Chérif
Keyword(s):  
Sodium Chloride ◽  
Brassica Napus ◽  
Seed Germination ◽  
Seedling Growth ◽  
Lipase Activity ◽  
High Salt ◽  
Salt Treatment ◽  
Brassica Napus L ◽  
Germination And Growth ◽  
Radicle Length

Seeds of rape (Brassica napus L.) were germinated at various NaCl concentrations up to 200 mM. Germinating levels, seedling growth, triacylglycerol mobilization and lipase activity were investigated. High salt concentrations resulted in retardation of seed germination. Seedling growth as measured by radicle length was severely reduced by NaCl doses higher than 50 mM. Moreover, the mobilization of storage oil in control rapeseed seedlings, started about 24 h after imbibition. As for germination and growth, elevated salt concentrations are found to delay triacylglycerol degradation. Experiments using triolein as substrate indicated clearly that lipase activity was inhibited by salt treatment.

scholarly journals Bioprospecting neglected botanicals as phyto-fertilizers for underutilized food crops

2019 ◽  
Vol 64 (4) ◽  
pp. 425-433
Author(s):  
Abiala Akindele
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Sesame Seed ◽  
Sustainable Growth ◽  
Chemical Components ◽  
Food Crops ◽  
Inoculation Methods ◽  
Soil Inoculation ◽  
Number Of Leaves ◽  
Radicle Length

Botanicals are part of the bioresources for sustainable growth of food crops, however, some botanicals have been neglected. This study investigates the potential effects of neglected botanicals on selected underutilized food crops (millet, sorghum and sesame) in Nigeria. Blotter technique and soil inoculation methods were used to evaluate the best botanicals that could be employed to enhance seed germination (SG) and seedling growth of underutilized food crops. With the exception of Newbouldia laevis, other botanicals enhanced seed germination of all tested crops. Ficus asperifolia and Parquetina nigrescens significantly (p<0.05) enhanced the radicle length (RL) while the plumule length (PL) remained unaffected. Specifically, observation shows that Newbouldia laevis completely inhibited sesame seed germination and seedling growth while Parquetina nigrescens enhanced millet height and sesame number of leaves. Generally, the effect of the botanicals on each crop was specific. Thus, these neglected botanicals stand the chance to enhance and sustain seedlings of underutilized food crops in Nigeria. Further study would be carried out to uncover the chemical components in the tested botanicals.

IMPACT OF FERTILIZERS APPLICATION ON SEED GERMINATION AND SEEDLING GROWTH OF VIGNA RADIATA

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
SUPRIYA DIXIT ◽  
R. K. GUPTA
Keyword(s):  
Seed Germination ◽  
Leaf Area ◽  
Seedling Growth ◽  
Vigna Radiata ◽  
Agricultural Research ◽  
Dry Weight ◽  
Fertilizer Application ◽  
Research Field ◽  
Chemical Fertilizer ◽  
Seedling Length

Currently, a real challenge for the workers in the agricultural research field is to stop or reduce the use of expensive agrochemicals/ chemical fertilizers which are hazardous to the environment as well as human health. Present study was aimed to improve the growth and obtain optimum yield of Vigna crop with eco-friendly, non-toxic way and to reduce the use of agrochemical/chemical fertilizer application in agricultural activities. A pot experiment was conducted to study the effect of chemical fertilizer (DAP) and biofertilizer ( Rhizobium strain) separately and in combination on seed germination and seedling growth (at 30 days) based on morphological parameters such as seedling length (cm), fresh weight (g), dry weight (g) and leaf area (cm)2 of Vigna radiata (L.) Wilczek. After one month (30 Days) observations, it was found that seedling length, fresh and dry weights and leaf area were maximum in T4 and minimum in T15, T7 and T8 favored improved seedling length and leaf area whereas T7, T8, and T9 favored improved fresh and dry weights as compared to control.

Effects of nitrogen on sweet sorghum seed germination, seedling growth and physiological traits under NaCl stress

2013 ◽  
Vol 20 (10) ◽  
pp. 1303-1309 ◽  
Author(s):  
Jing MU ◽  
Xiao-Jing LIU ◽  
Jin XU ◽  
Ren-Zhao MAO ◽  
Wei WEI ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Sweet Sorghum ◽  
Nacl Stress ◽  
Physiological Traits

scholarly journals Effects of exogenous silicon on maize seed germination and seedling growth

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yankun Sun ◽  
Jiaqi Xu ◽  
Xiangyang Miao ◽  
Xuesong Lin ◽  
Wanzhen Liu ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Crop Yields ◽  
Dry Weight ◽  
Membrane System ◽  
Water Soluble ◽  
Current Status ◽  
Antioxidant Enzyme Activities ◽  
Chlorophyll Contents ◽  
Antioxidant Defence System

AbstractAs the global population continues to increase, global food production needs to double by 2050 to meet the demand. Given the current status of the not expansion of cultivated land area, agronomic seedlings are complete, well-formed and strong, which is the basis of high crop yields. The aim of this experiment was to study the effects of seed germination and seedling growth in response to silicon (from water-soluble Si fertilizer). The effects of Si on the maize germination, seedling growth, chlorophyll contents, osmoprotectant contents, antioxidant enzyme activities, non-enzymatic antioxidant contents and stomatal characteristics were studied by soaking Xianyu 335 in solutions of different concentrations of Si (0, 5, 10, 15, 20, and 25 g·L−1). In this study, Si treatments significantly increased the seed germination and per-plant dry weight of seedlings (P < 0.05), and the optimal concentration was 15 g·L−1. As a result of the Si treatment of the seeds, the chlorophyll content, osmotic material accumulation and antioxidant defence system activity increased, reducing membrane system damage, reactive oxygen species contents, and stomatal aperture. The results suggested that 15 g·L−1 Si significantly stimulated seed germination and promoted the growth of maize seedlings, laying a solid foundation for subsequent maize growth.

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