How many varieties of cauliflower are developed by biofortification or conventional breeding for resistance to black rot?

What is the process of breeding crops for higher levels of vitamins,minerals,and proteins called?

In the year $P$, a hybrid variety of maize was developed that had twice the amount of $Q$ amino acids compared to existing maize varieties.
$\quad\quad P \quad Q$

Which components are required to be present in abundant quantities in biofortified crops?

In hybrid maize varieties,which of the following elements have been found to have double the amount compared to existing maize varieties?
$(i)$ Lysine
$(ii)$ Alanine
$(iii)$ Tryptophan
$(iv)$ Proline
$(v)$ Histamine

In the year $2000$,the maize hybrids developed had twice the amount of which amino acids compared to existing maize varieties?