between native and introduced salamanders raises new challenges for conservation.
"That may well be the real basis for hybrid vigor
," says Dooner.
This phenomenon could be attributed to a higher metabolic rate associated with "hybrid vigor
There are abundant reasons to believe that we are a better people who are ready to embrace our past and present and fully live into the amazing people that we can be showing the world what agronomists might call `hybrid vigor.' America is the country of hybrid vigor
For the past 60 years, seed companies and universities have experimented with controlling the pollination process of inbred lines, crossing them to produce seeds known as hybrid vigor
. The controlled cross-pollination of two inbred corn seed lines - one producing, say, 40 bushels and one producing 35 bushels - can create a hybrid vigor
seed that when planted in the same numbers as either of its parent seed, produces up to 250 bushels.
against parasites in interspecific crosses between two mice species.
On the contrary, our data show a moderate hybrid vigor
effect for hybridizations involving the population with the narrowest bottleneck (M3).
But given the (generally accepted) "dominance" explanation of hybrid vigor
, we should expect in time to develop pure lines as good as hybrids.
in the strict biological sense of superiority of a corn hybrid over its genetically inbred parents is a general natural phenomenon.
Increased yield of chilli owing to the manifestation of hybrid vigor
was observed earlier by Sathiyamurthy (2002), Rani (2002), Kumar (2005) and Karthik (2006).
The lower production of TDM of the hybrids in relation to the Azulao genotype may have been caused by the low capacity of the combination between the genitors, which resulted in lowered hybrid vigor
in the progenies.