Who coined the term 'heterosis'?

Select the correct option for $Saccharum$ $barberi$ and $Saccharum$ $officinarum$.
$I -$ Low sugar content
$II -$ High sugar content
$III -$ Low yield
$IV -$ High yield
$V -$ Grown in North India
$VI -$ Grown in South India
$Saccharum$ $barberi$ $\quad$ $Saccharum$ $officinarum$

In a plant breeding program,what is the entire collection of plants/seeds having all the diverse alleles for all genes in a given crop called?

One of the popular methods employed in the production of new varieties of plants is

$A$ and $B$ were crossed to obtain sugarcane varieties having desirable qualities and the ability to grow in the sugarcane areas of North India. The most appropriate option for $A$ and $B$ is:

Plant breeding has a close relationship with