Plant Science Archives - Dhanuka Agri

Important Phytopathogenic organisms

January 20, 2021Arpit MishraLeave a Comment

Important Phytopathogenic organisms : 1.Fungi 2.Bacteria 3.Fastidious vascular bacteria (RLO’s) 4.Mollicutes (phytoplasma and spiroplasma) 5.viruses 6.viroids 7.Algae 8.Flagellated protozoans . 1.Fungi: Fungi are eukaryotic, spore bearing, achlorophyllous organisms that generally reproduce sexually and asexually and whose filamentous, branched somatic structures are typically surrounded by cell walls consisting chitin or cellulose or both with many organic […]

GI Tag in Agriculture crops

July 25, 2020July 25, 2020Dhanendra DhanukaLeave a Comment

GI Tag in Agriculture cops ➢ GI status is an indication that identifies goods as produced from a particular area, which has special quality or reputation attributable to its geographical origin. ➢ The first product to get a GI tag in India was the Darjeeling Tea in 2004. There are a total of 344 products […]

Plant pathogenic bacteria surviving in seeds and planting materials.

June 2, 2020July 23, 2020Dhanendra DhanukaLeave a Comment

Sl.No Disease Bacteria a. Seed 1. Bacterial canker of tomato Clavibacter michiganensis subsp. michiganensis 2. Goss’s bacterial wilt and blight of maize Clavibacter michiganensis subsp. nebraskensis 3. Bacterial wilt of bean Curtobacterium flaccumfaciens pv. flaccumfaciens 4. Bacterial brown stripe of rice Pseudomonas avenae 5. Bacterial grain rot of rice Pseudomonas glumae 6. Bacterial blight of […]

WHAT IS MYCOLOGY ?

June 2, 2020July 23, 2020Dhanendra DhanukaLeave a Comment

WHAT IS MYCOLOGY ? The term “Mycology’ etimologically means “the study of fungi”. Fungi are highly evolved forms of microorganisms included in the division “Thallophyta” in the botanical classification of the plant kingdom. It is interesting to note that many of the botanist have specialised in mycology and plant pathology. The first Indian universities that […]

Seed And their Types

January 29, 2020January 29, 2020Arpit MishraLeave a Comment

Seed And their Types Seed: • Botanically seed is a fertilized ovule consisting of intact embryo, stored food and seed coat which is viable and has got the capacity to germinate. Indian seed act passed in: 1966 National Seed Corporation in: 1963 Types of pure seeds: A. Breeder/nucleus seed: • Such seed are produced directly […]

Photoperiodism in Plants

January 28, 2020January 28, 2020Arpit MishraLeave a Comment

Photoperiodism In Plants • Response of plant to day light period specially flowering behaviour is called photoperiodism. • The term photoperiodism was coined by Garner and Allard (1920). They classified plants into three categories: a. Short day plants: • Such plants require the day length less than 12 hours for flower initiation. • E.g. tobacco, […]

Loss of water in plants

January 28, 2020Arpit MishraLeave a Comment

Loss of water in plants: a. Transpiration: The loss of water in the form the living aerial parts of the plant in the form of water vapour is termed as transpiration. Transpiration is a necessary evil. It cooled down the leaf surface of plants. Nearly 99% of the water absorbed by the plants is lost in transpiration. […]

What is Fungicides ? and their Types

January 19, 2020May 2, 2020Arpit MishraLeave a Comment

What is Fungicides ? and their Types Fungicides: are chemicals used to kill fungi. Types : 1. Sulphur fungicides: • Two main groups: a. Elemental sulphur: is used as dust and wettable powder b. Lime sulphur: is used as dormant spray • Sulphur fungicides are effective against powdery mildews. 2. Copper compound fungicides: a. Copper […]

Introduction of Fungi In Plant Pathology

January 19, 2020May 2, 2020Arpit MishraLeave a Comment

Introduction of Fungi In Plant Pathology Fungi are filamentous, multi -cellular organisms, having organized nucleus with nuclear membrane, always lacking of chlorophyll,but presence of cell wall in true fungi and multiplication by production of asexual or sexual spores of vegetative cells. Vegetative structure of fungi: • In the true fungi true cell wall is present […]

Role of Mutation breeding in plant

January 15, 2020January 2, 2021Dhanendra DhanukaLeave a Comment

INTRODUCTION Mutation refers to sudden heritable change in the phenotype of an individual. Is the change in genetic material : a random change in a gene or chromosome resulting in new trait. The term mutation breeding was first coined by freisleben and lein (1994). Father of mutation breeding -Ake gustafson. It is most commonly used […]

Category: Plant Science