Table 4.

Trial II: Glucosinolates concentration (g%)¹ in hypocotyls of the four Peruvian Maca phenotypes (L. peruvianum) Red, Black, Purple and Yellow cultivated and collected in a single location on the slope of Ancash plantation site at the altitudes 4,000 m, 4,150 m and 4,300 m a.s.l.^*

Maca Phenotype	4,000 m Torre	4,150 m De Genaro	4,300 m Retama	± SD
Red	0. 278 a I	0.512 b I	0.926 c I	± 0.233
Black	0.622 a II	0.418 ab I	0.114 b II	± 0.201
Purple	0.486 a I II	0.693 a I	1.136 b I	± 0.224
Yellow	0.418 a I II	0.471 a I	0.522 a III	± 0.067

^*Values within the rows with unlike lower case letters indicate an existence of statistically significant differences at P<0.05 level between hypocotyls within each of the four Maca phenotypes cultivated at altitudes 4,000 m, 4,150 m and 4,300 m above sea level, while unlike Roman numbers within each column indicate significant differences (P<0.05) between results obtained from analysis of Red, Black, Yellow and Purple hypocotyls of Peruvian Maca phenotypes.

¹Results obtained in Laboratory B with the use of the method by Li et al. (2001) and determined against Glucotropaeolin as an external standard.