what does HG stands for in Guar varieties ?

[preetisaini]

hi

I want to know what does HG stands for in HG75, HG365, HG563 etc varieties of guar

 

[maarifalhind]

H may be for Hissar Agriculture University(CCSHAU)
G may be for Guar.

 

[yadav harish]

Hisar Guar