Gamal El Ghazali

8 Questions 27 Answers 0 Followers

Questions related from Gamal El Ghazali

Why phylogenetic studies in some cases incongruent with pollen morphological studies ?

Coplosapelta and Acranthera (Rubiaceae) are regarded as sister taxa by Rydin etal. 2009 (10.1007/s00606-008-0138-4) and Razafimandimbison & Rydin 2024 (10.1002/tax.13167). Pollen...

25 July 2025 1,511 0 View

Is there a need for new palynological term?

The term pororate signifies the presence of incongruent pores in compound apertures. Looking into glossaries and illustrated pollen terminology, no term was encountered to denote compound...

25 May 2025 854 2 View

The persistent winged perianth occurs in few species of the Chenopodiaceae, does it possess any significance on the taxonomy of the family?

The presence of persistent winged perianth is a good diagnostic character which distinguishes the Chenopodiaceae from the allied family Amaranthaceae. This character is present only in few genera...

08 March 2017 238 3 View

Does the existence of pollen polymorphism will lead to irreliability of pollen identification?

It was well documented that a number of plant species exhibit pollen polymorphism especially in tropical countries. The extend of such polymorphism is not yet investigated in various environmental...

03 February 2017 6,877 5 View

Is it possible to differentiate pollen grains of Chenopods from Amaranths based on molecular characteristics?

Pollen grains from the Cheno- Amaranth complex have been reported as a constituent of the airborne pollen grains in many countries, but unfortunately their pollen morphology is very similar and...

06 January 2017 2,493 1 View

If we accept that apertures are the main sites of emergence of pollen tube , then how germination occurs in an inaperturate pollen grains?

Not all pollen grains are aperturate, inaperturate pollen grains were encountered in many plant families (monocots and dicots). If so then why in some publications, pollen grains are classified as...

26 December 2016 2,182 5 View

How to interpret vegetation data illustrated by using Canonical correspondence Analysis (CCA)?

During a study on the effect of treated sewage effluents on plant cover and soil, I encountered a difficulty in the precise interpretation of the )CCA) diagram, illustrating the relationship...

17 December 2016 4,106 4 View

Are plants with united pollen grains more successful in pollination than those with monad grains, or it is a matter of number of ovules per ovary?

Pollen grains exit single as monads or united in tetrads, polyads, massulae or compact pollinia. United pollen grains have the potential to produce more pollen tubes from a single successful...

01 January 1970 6,683 8 View