Effects of Reciprocal Crosses on the Growth and Selenium Accumulation in F₁ Generation of Two Ecotypes of Solanum photeinocarpum

PurposeWe investigated the effects of reciprocal crosses on the physiological characteristics and selenium-enriched ability of F₁ generations in Solanum photeinocarpum to provide reference for the cross breeding of selenium-enriched S. photeinocarpum.

Method Farmland and mining ecotypes of S. photeinocarpum were cultivated in pot experiment with 10 mg/kg selenium, the effects of reciprocal crosses on the biomass, photosynthetic pigment content, antioxidant enzyme activity and selenium accumulation of S. photeinocarpum F₁ generation were studied.

ResultCompared with the self-bred F₁ generations, reciprocal crosses significantly increased the SOD activity, CAT activity, soluble protein content in leaves of S. photeinocarpum F₁ generations (P<0.05). The biomass and selenium accumulation in roots and shoots of F₁ generations of two ecotypes of S. photeinocarpum were significantly higher than that of their self-bred F₁ generations (P<0.05), and the growth and selenium-enriched ability of hybrid progenies with farmland ecotype S. photeinocarpum was used as female parent and mining ecotype S. photeinocarpum was used as male parent were stronger.

ConclusionThe traits of growth, stress resistance, and selenium accumulation of F₁ generations of farmland and mining ecotypes of S. photeinocarpum were superior to those of their parents.