What is the exact evolutionary history of flowers?

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When is it unnecessary to change organisational culture?

As a former management practitioner, I recall a generally accepted view that changing organisational culture is difficult, so you should only attempt it if the organisational change that you are...

27 February 2021 2,595 8 View

Can I use a protein-devoid condition as my negative control in ELISA?

Hello, I am running a sandwich-type ELISA where I am trying to inhibit a protein-protein interaction using small molecules. For each experiment, I determine my Z' (Z-prime) to determine the...

23 February 2021 7,429 1 View

Will SARS-CoV-2 Spike be broken into S1 and S2 by denaturing conditions?

Hello, I am performing a western blot of my SARS-CoV-2 Spike-pseudotyped lentiviral particles. I denature my virus by adding concentrated virus to 2X Laemmli buffer at 1:1, then boiling for...

17 February 2021 4,844 4 View

What is the best temperature to coat an ELISA plate?

Hello, I want to control the temperature of my ELISA plate during incubations to get consistent results. In general, what is the best temperature to coat the plate with antibody? I have been...

16 February 2021 2,377 7 View

SPSS - Merging files by ID numbers that contain letters?

Hi, I'm trying to merge files from a data base of 20 files, each containing about 4000 subjects. Unfortunately the ID numbers are actually a combination of numbers and letters (e.g., b1458219)....

15 February 2021 5,833 3 View

How would I go about getting an expert review on the interview questions for the dissertation?

Good Evening, My name is David Marshall and I am Doctor of Management Student at Colorado Technical University Online. I just recently received approval from the IRB to start data collection on...

08 February 2021 346 7 View

How can I quantify the color of a solution?

I know colorimetry has been the standard way by way of measuring the concentration of a particular compound (solute) in a colored solution (solvent or measure quantities of a particular compound...

08 February 2021 2,673 1 View

ACE2 Blotted as a double band?

Hello, I have recently run a western of Vero cells for ACE2. I detected ACE2 at the correct size, but it presents as a double band. The sample was prepared by lysing cells in 1X Laemmli...

07 February 2021 6,973 3 View

SARS-CoV-2 Spike Protein Western Bands?

Hello, I am western blotting SARS-CoV-2 spike protein from lentiviral using an antibody against S1. To prepare samples, I mixed concentrated lentivirus 1:1 with 2X Laemmli buffer and boiled...

07 February 2021 3,643 4 View

How does DMSO percentage affect ELISA?

Hello, In my sandwich-type ELISA which is testing for small molecule inhibition of a protein-protein interaction, it seems that DMSO percentage and dilution protocol are important. I...

31 January 2021 6,771 1 View

Does the subsoil have an effect on the spread of weeds whose roots are more than 35 cm deep?

For weeds whose roots deepen more than the level of subsoil, they may be affected by this layer, for example, determined by height and growth, as well as limited to flower production and seeds.

01 February 2021 1,940 4 View

Can you help me find a good, new (2009 and above) resources to get some informations and basics about plant systematic?

Hi, I hope you are doing well I'm a college student interested in botany and everything related to it. Lately I've been so into classification of plants and I don't know how to find a resource. I...

01 February 2021 1,549 5 View

R script statistics - Effect of 2 variables on another?

There is data about the location and characteristics of plots of Oilseed Rape on several farms, as well as the relative abundance of different pollinator species counted at each plot. The...

25 November 2020 3,203 1 View

Is there a database of photos with insect pollinators on flowers of plants?

I would like to know if there is a database of photos with insect pollinators on flowers. The insects must be located on flowers of plants. I am interested in pollinators encountered in Europe,...

04 November 2020 2,219 6 View

How do you extract a specific chemical from a plant?

I know how to get the general extract from a plant - I can get the total phenols, alkaloids, Flavanoids, etc, but I want to isolate just one particular phenolic compound from the total extract....

21 October 2020 6,384 19 View

Can anyone give me advice on choosing Mphil in Plant systematics?

I am currently an undergraduate student (major in biological science) who is looking for a Master of Science in Plant Systematics and Evolution Biology aspects. My result in university is quite...

12 October 2020 1,559 3 View

How plant taxonomy is the mother of botany?

Research articles

11 October 2020 380 19 View

Who can share me otostegia integrifolia cultivation guideline or related material?

This is to know botany, ecology and cultivation practices.

09 October 2020 5,317 2 View

Can anybody identify and advise on holoparasitic plants living inside cacti?

Four cacti in our conservatory carry holoparasitic plants inside them which have flowered or are still flowering this year. They appear to be two species. Can anybody answer these questions: -...

24 September 2020 9,749 3 View

What is the relationship between plant hormones and plant allometry?

Hi, i'm looking for bibliographic references that explains the relationship between plant hormones and plant allometry (relation between the size of an organism and aspects of its physiology and...

21 September 2020 9,653 6 View

Arvind Singh

Dear Alwin David Samuel,

Please have a look at these attached resources.

Good luck

Fatih Fazlioglu

Hi Alvin,

These two review articles might be helpful:

Article The early evolution of the Angiosperm flower

Article Molecular evolution of flower development

Dear Samuel,

Please have a look at this PDF attachment also.

Best of luck

Albert Kaboré

Please have a look at this link.

http://science.sciencemag.org/content/342/6165/1241089

Rahul Sharma

Please have a look at this link

The evolutionary history of flowering plants by Charles Foster