The production of a hybrid corn variety involves three steps: (1)
the selection of superior plants
; (2) selfing for several generations to produce a series of inbred lines, which although different from each other are each pure-breeding and highly uniform; and (3) crossing selected inbred lines.
How are hybrid plants developed?
A hybrid plant is the
result of cross pollinating two different plant varieties and growing the seed the mix produces
. … Hybrids might be developed for disease resistance, size of plant, flower, or fruit, increased flowering, color, taste or any reason a plant might be considered special.
How hybrid varieties can be produced in the population?
Hybrids are natural
Through selection we can make
multiple different breeding lines
in which traits of our choosing are combined. By mixing and matching different breeding lines we can combine these traits in a variety of combinations and create a range of new hybrid varieties.
What are the main characteristics of hybrid varieties?
- Productivity: Hybrid varieties are vigorous and highly productive because heterosis or hybrid vigour is fully exploited in such varieties.
- Genetic Constitution: …
- Adaptability: …
- Application: …
- Resistance:
How are hybrid seeds formed?
Hybrid seeds are produced
manually by modifying the plant structure by removal of male organ from female plant before anthesis
. This system is possible only when the male and female parts of a single flower or plants are separate.
What are pure and hybrid plants?
True breeding plants are those that have a pure genotype for a specific trait. When bred, they will produce a specific phenotype. Hybrid plants are those
that are the result of cross-pollinating two true breeding plants
.
What is an example of a hybrid plant?
Some
vegetable and field crop plants
are hybrid plants, derived from F1 hybrid seed, and valued because of enhanced yield of seed (e.g., corn), vegetation (e.g., kale, carrot, and onion), or fruit (e.g., tomatoes). Hybrid seed production systems consist of two components, inbred lines and a hybridization system.
What is hybrid variety with example?
Examples:
wheat, oats, barley, rice, rapeseed
(with 10-50% self-sterility). Self-sterile plants Plants the ovules of which are predominantly fertilized by pollen of other plants of the same species. Examples: Rye, maize. 3.2 What are open-pollinated varieties?
Can we use hybrid varieties repetitively?
The outstanding example of the exploitation of hybrid vigour through the use of F
1
hybrid varieties has been with corn (maize). An important consequence of the homozygosity of the inbred lines is that the hybrid between any two inbreds will always be the same. …
What is hybrid cotton?
Cotton hybrids are of two types, viz.,
Tetraploid hybrids, and
.
Diploid hybrids
. Those hybrids which are developed in tetraploid species are referred to as tetraploid hybrids and those produced in diploid species are known as diploid hybrids have been released for commercial cultivation.
What are the advantages of hybrid varieties?
Hybrid seeds have some advantages: they
are easier and faster to grow
, they adapt better to stress, and they produce plants with larger fruit, higher yields, disease resistance, and longer shelf life than heirlooms.
Which are the hybrid varieties of coconut?
- Kerasankara (WCT x COD) …
- Chandrasankara (COD x WCT) …
- Kalpa Sreshta (MYD x TPT) …
- Chandralaksha (LCT x COD) …
- Kalpa Samrudhi (MYDxWCT) …
- Keraganga (WCT (West Coast Tall) x GBGD (Gangabondam Green Dwarf)) …
- Kerasoubhagya (WCT x SSAT) …
- VHC 2 (ECT x MYD)
What are the characteristics of hybrid seeds?
Hybrid varieties often feature traits like
disease resistance, improved flavour or productivity, earlier maturity, and so on
. Different traits are desirable for different types of crops. In very general terms, more can be expected out of hybrid seeds than their open pollinated alternatives.
Why are hybrid seeds bad?
The problem with hybrid seeds is that
they cannot be used for reproduction
. If you take seed from a plant grown from a hybrid, chances are the seed will be sterile. If you are lucky enough to get one to grow, it will not produce the same hybrid as the parent plant. … Nature has created many varieties of the same plant.
What are the disadvantages of hybrid seeds?
- Takes a lot of time and money to create.
- Can cost more to buy than other seeds.
- Seeds from hybrid plants cannot be saved.
- Some say the produce from hybrid plants is not as tasty.
Can you replant hybrid seeds?
You
shouldn’t save seed
from hybrid vegetables because they won’t produce true in the next generation. … The best plant of each type is then taken and self-pollinated (in isolation) each year and, each year, the seed is re-sown. Eventually, every time the seed is sown the same identical plants will appear.
