• RSS
  • Google Plus
  • Facebook
  • Twitter
  • Linkedin
  • Pakistan Agriculture and Farming Cover

    Welcome to PakAgriFarming

    PakAgriFarming is commited to high standards in extension of agriculture in Pakistan through simple and factual information and topics related to the hottest issues in Pakistan Agriculture.

  • Approved cotton varieties for Punjab 2014

    کپاس کی کاشت کے لیے موزوں اقسام

    پنجاب میں کپاس کی کاشت کا آغاز ہو نے والا ہے اور پیشتر علاقوں میں میں رنیع کی فصل کی برداشت کا وقت قرہب ہے۔ اس لیے بروقت کپاس کے بیج کا انتخاب اچھی پیداوار حاصل کرنے کی طرف پہلا قدم ہے۔۔۔

  • Introduction, characteristics and objectives of tillage

    Intoduction and Objectives of Tillage

    Tillage is the primary requirement before any cropping activity. Perhaps, if one is ignorant about tillage, he knows nothing about farming. So, let's look into a brief intro...

  • The Next 10 Years of Tunnel Farming in Pakistan

    The Next 10 Years of Tunnel Farming in Pakistan

    It's been 10 years since the introduction of tunnel farming in Pakistan, the conversion rate has been slow but are there any chance of rapid growth of tunnel farming in Pakistan? Let's disover...

  • Wheat Production Technology for Rainfed Areas of Punjab for 2013-14

    Wheat Production Technology for Rainfed Areas of Punjab for 2013-14

    Wheat is the most important cereal crop in Pakistan and staple food. Wheat has a large share of cultivated land in rabi season and hence large production is expected...

PakAgriFarming

Saturday, September 22, 2012

Botanical Classification of Plants

Posted by Unknown On Saturday, September 22, 2012

The system of classification of plants has existed from centuries. It began to be formally known during the era of Carlous Linnaeous when he first published the book about classification of plants and a few years later published book of classification of animals. The classification system proposed by Linnaeous is knows today as conventional system.
The organisms in the plant kingdom were classified into divisions or phyla according to structural features.
I) THALLOPHYTA
These are the simplest organisms which had cell walls and lack structures like roots, stems and leaves. They include bacteria, fungi and algae. The most renowned among these are mushrooms and nitrogen fixing bacteria. And many are notorious plant pathogens causing serious diseases of plants like rusts and smuts.
II) BRYOPHYTA
These are mosses, liverworts and hornworts which lack true roots and flowers. These species are ecologically very important in the tropics and forest ecosystems.
III) PTERIDOPHYTA
These are higher plants having vascular systems and true leaves, stems and roots. They do not have flower and fruit formation and hence reproduce through spores. For example, ferns, club mosses, horsetails etc. are commonly found in tropics and forest ecosystems and they have agronomic use as ornamentals only.
IV) SPERMATOPHYTA
These are the higher plants which have true roots, stems, leaves and vascular tissues and reproduce through seeds and bear true flowers. This division is further divided into two;
a) GYMNOSPERMS
They are also called “naked seeded” plants because their seeds are not produced inside the fruits rather are lying on the structures called “cones”. For example, pine, fir, and cedar. They have significance as ornamental plants in modern times and also an essential part of alpine and forests.
b) ANGIOSPERMS
They produces seeds inside true fruits and these are highly adaptable plants and found almost in every ecosystem. All the cultivated crops belong to angiosperms. They have further 2 categories based on the number of cotyledons present inside their seeds as;
i) MONOCOTS (aka Monocotyledons)
They have single cotyledon in their seed. Their germination is hypogeal and most important cereals and fodders belong to this group, for example, wheat, rice, maize, barley, sorghum belonging to the family poaceae.
ii) DICOTS (aka DICOTYLEDONS)
They have two cotyledons in their seeds and they are most advanced plants. Their germination is epigeal. The plants are broad leaved. Many of them are economically important to man for either food, fiber or other purposes. For example, cucurbits, soybean, pulses, tobacco and cotton.
---------------------------------------------------------------------------------------------