PiERF1 regulates cold tolerance in Plumbago indica L. through ethylene signalling.

Ethylene is a signalling factor that plays a key role in the response of plants to abiotic stresses, such as cold stress. Recent studies have shown that the exogenous application of 1-aminocyclopropane-1-carboxylate (ACC), an ethylene promoter, affects plant cold tolerance. The cold-responsive specific gene DREB plays a crucial role in enhancing cold tolerance in plants by activating several cold-responsive (COR) genes.

Biological effects of electron beam to target turning X-ray (EBTTX) on two freesia () cultivars.

Electron beam to target turning X-ray (EBTTX) is an emerging irradiation technology that can potentially accelerate the breeding process of plants. The biological effects of EBTTX irradiation on the two freesia cultivars (the red freesia and the purple freesia) were investigated by establishing an irradiation-mediated mutation breeding protocol. The germination rate, survival rate, plant height, leaf number and area, root number and length of the two freesia cultivars decreased following different irradiation doses (25, 50, 75, and 100-Gy).