Posts

Showing posts from April, 2022

Objectives of Plant Breeding

-
Major Objectives of Plant Breeding Program Plant breeding is an important branch of agricultural science. Its main purpose is to develop new and improved crop varieties. These improved varieties give better yield, better quality, and better resistance against diseases and harmful environmental conditions. A plant breeding program is planned according to the needs of farmers, consumers, industries, and climate. The major objectives of plant breeding are explained below in simple paragraph form. 1. Higher Yield The first and most important objective of plant breeding is to increase crop yield. Food demand is increasing due to rapid population growth, so breeders try to develop varieties that produce more grains, fruits, seeds, or biomass per unit area. High-yielding varieties help farmers earn more profit and improve food security. This is why yield improvement is considered the central objective of every breeding program. 2. Improved Quality Another major objective is to improve t...
Post a Comment
Read more

Gene delivery to a potential transgenic plant

-
  Various methods of gene delivery to a potential transgenic plant.                          The uptake of foreign DNA or transgenes by plant cell is called transformation. A variety of techniques have been used to introduce transgene into plant cell. This can be grouped into following two major categories:-        a) Agrobacterium mediated gene transfer.        b) Direct gene transfer.   a) Agrobacterium mediated gene transfer :- Agrobacterium tumefaciens is a remarkable species of soil-dwelling bacteria that has the ability to infect plant cells with a piece of its DNA. When the bacterial DNA is integrated into a plant chromosome, it effectively hijacks the plant’s cellular machinery and uses it to ensure the proliferation of the bacterial population. The gene transfer through Agrobact...
Post a Comment
Read more

Ecological importance of bryophyte.

-
  Ecological importance of bryophyte.                    Bryophytes are the amphibian member of plant kingdom, which are also known as moss. Unlike most of the higher plants bryophytes are found in groups of individual   and they never form any mechanical tissue. Bryophyte often play in the economy of nature, as ecological indicator, medicinal raw materials and many other aspects.    Bryophytes are important constituent of ecosystem in temperate and tropical region   of earth. They are ecologically important because of following reasons 1. Bryophytes and plant succession : Among the bryophytes the mosses are considered to potent forms of successional process. They colonize over   the nutrient poor   sides, where no other plant can survive. After death and decay they form humus and increase   the soil fertility.Some important species under this category are- Cephalozia media ...
Post a Comment
Read more