What is the difference between heterosis and inbreeding depression?
What is the difference between heterosis and inbreeding depression?
The key difference between heterosis and inbreeding depression is that heterosis is the enhancement of traits due to the mixing of genes from two different individuals during outbreeding while inbreeding depression is the reduced biological fitness of offspring due to the increased homozygosity as a result of …
What is the difference between inbreeding and heterosis?
(i) The cross between two individuals of a species which are related by descent is called inbreeding, whereas the cross between two unrelated individuals or species which may develop an improved hybrid is called heterosis.
What is inbreeding depression in plant breeding?
Inbreeding depression is the reduced survival and fertility of offspring of related individuals. Large effects are documented in wild animal and plant populations, as well as in humans. Intercrossing inbred strains improves yield (heterosis).
What toxin is present in pigeon peas?
In dry pigeonpea seeds, certain amounts of poly- phenolic tannin compounds are also present, which inhibit the normal activity of digestive enzymes such as trypsin, chymotrypsin and amylase (Table 6). …
How does heterosis occur?
heterosis, also called hybrid vigour, the increase in such characteristics as size, growth rate, fertility, and yield of a hybrid organism over those of its parents. Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits.
What is meant by heterosis?
Abstract. Heterosis refers to the phenomenon that progeny of diverse varieties of a species or crosses between species exhibit greater biomass, speed of development, and fertility than both parents. Various models have been posited to explain heterosis, including dominance, overdominance, and pseudo-overdominance.
How do you treat inbreeding depression?
Introducing alleles from a different population can reverse inbreeding depression. Different populations of the same species have different deleterious traits, and therefore their cross breeding will not result in homozygosity at most loci in the offspring.
How do you overcome inbreeding depression?
Inbreeding depression can be overcome by the following ways :
- Out breeding- the breeding of animals which are unrelated to each other and do not have come ancestors for 4-6 generations.
- Out crossing- mating done with the animals osf same breed but after 4-6 generations.
Are pigeon peas safe to eat?
Pigeon peas can be utilized when young as a raw pea and when more mature or dried as a bean or dried pea. When immature and fresh they need not be cooked and the peas can be shelled and added to salads or eaten as a snack as is. Cooked peas can be added to soups, stews, curries, sauces, salads and rice preparations.
What are the benefits of pigeon peas?
Here are some amazing health benefits of Pigeon Pea:
- 1 . Maintains Blood Pressure. Potassium is the main mineral in pigeon peas that acts as a vasodilator and reduces blood pressure.
- 2 . Prevents Anemia.
- 3 . Aids Weight Loss.
- 4 . Helps To Boost Energy.
- 5 . Promotes A Healthy Heart.
- 6 . Improves Digestive Health.
How do we exploit heterosis?
Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits. The first-generation offspring generally show, in greater measure, the desired characteristics of both parents.
What are the major effects of heterosis?
Heterosis has a positive effect because in the crossbreds many genes are heterozygous that were homozygous in the parent breeds. Alleles with a negative effect are often recessive. In the crossbreds these negative recessive alleles are ruled out.
