Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

Step-by-step solution

Functions of gibberellins: (1) Stem/internode elongation. (2) Elongation of genetic dwarf plants. (3) Flowering in long-day plants in short light duration. (4) It induces parthenocarpy. (5) It is a substitution of vernalisation. (6) GA breaks the dormancy of seeds, buds and tubers. Gibberellin induces the synthesis of hydrolysing enzymes like alpha-amylase. (8) GA induces maleness in Cucumis and Cannabis. (9) Size of grapes & Geranium flowers increased by GA. (10) It helps in fermentation by increasing the growth o