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Questions related from Huma Qureshi
What are parameters/criteria scientists use to nominate a species as invasive in area? According to definition they are mostly non-native, fast growing species with potential harm to...
06 May 2021 372 1 View
What software are more advance and accurate for biodiversity indices calculations now a days in Plant sciences?
22 March 2017 3,303 2 View
Invasive vs pervasive?
17 November 2016 8,685 6 View
Thanks in advance for your replies.
27 April 2015 1,429 3 View
Except for radish, there are various pre-soaking hours for different seeds to be used in germination and early seedling bio assays in the laboratory. For lettuce, I read 4hr as optimum pre-soaking...
08 April 2015 4,047 4 View
Nowadays, allelopathy is topic of interest for weed control. Scientists are isolating the natural phytotoxins/allelochemicals for weed control. How one can justify that isolated allelochemicals...
25 March 2015 482 8 View
Is there any reliable institute that analyse the extract for isolation and characterization of bioactives? I have found chloroform fraction (through kupchan protocol) of plant the most toxic one...
07 March 2015 7,381 5 View
All papers report use of mercuric chloride (0.5%) for seed surface sterilization in germination and seedling growth bio-assays, what is reason of use of this compound while there are also many...
24 February 2015 1,716 23 View
Rhaphanus sativus seeds are often used to test toxic compounds of medicinal or other plants. Easy germination and throughout year availability are common factors for their selection. But what is...
24 February 2015 9,465 5 View
To perform any bio-assay with different organic fractions of a plant part, mostly methanol crude extract is partitioned with different solvents in increasing order of polarity using a separating...
24 February 2015 5,931 6 View
Botanists usually collect different plant parts, dry it and convert that into powder form for the extraction in different solvents. Why is intact fresh material not used for extractions?
16 February 2015 2,780 16 View
I have tested different organic fractions of crude methanol extract of Parthenium hysterophorus leaves. Ethyl acetate fraction showed highest toxic activity. Now I would like to find out the most...
16 January 2015 7,669 3 View
LC-MS or FT-IR or both in combination?
16 January 2015 8,076 5 View
Phlaris minor is world known weed of Triticum aestivum while less common in other fields. Similarly other crops have their own weeds. What makes these weeds crop specific? Moreover why most of...
08 January 2015 4,526 18 View
If some one wants to check certain activity, say for example antimicrobial, for 4 or 5 different plants with aim to perform chemical characterization for plant showing highest activity, is this...
05 January 2015 7,740 12 View
Most preliminary studies on plant toxicity use radish and lettuce seeds as test plants. Inhibitory effect on germination and seedling growth of both is taken as indicator of toxicity in plant. Is...
01 January 2015 1,913 8 View
Which one of the two relations is more appropriate for the calculation of importance value index for a species? IVI= Relative density + Relative frequency + Relative cover (Reference: ECOLOGICAL...
30 December 2014 5,346 15 View
Plant material is normally extracted after shade drying and grinding. Pulverized material is then extracted through different techniques like cold maceration or through soxhlet apparatus. If...
29 December 2014 936 9 View
As most of the open access journals charge a fee to the authors to make their work accessible. These charges are even not affordable in certain cases. Are there any options available e.g.,...
01 January 1970 2,884 16 View
If anyone interested, let me know. I need solo funder not a group please.
01 January 1970 9,279 0 View
I need a funder for Egyptian journal of botany.
01 January 1970 5,227 4 View
