부산대학교 도서관

• We presented a way to prevent wheat lodging: mixed cropping of two genotypes enhanced wheat lodging resistance. • The lodging can be inhibited by mixed cropping of lodging-resistant cultivars with lodging-susceptible cultivars. • Mixed cropping inhibited lodging via lodging-resistant cultivars providing support for lodging-susceptible cultivars. Lodging negatively affects wheat production worldwide. However, little is known about the potential of intercropping (different genotypes of wheat are planted in alternating rows) and mixed cropping of different genotypes to enhance the lodging resistance of wheat populations. In this study, a field experiment was conducted with two cultivars, 'Shannong8355' (SN8355, a lodging-resistant cultivar) and 'Shannong15' (SN15, a lodging-susceptible cultivar), to investigate the effect of these planting patterns on the occurrence of lodging in wheat and analyze the mechanism through which lodging resistance may be enhanced. Intercropping and mixed cropping of SN8355 with SN15 was shown to effectively reduce the occurrence of lodging in SN15, through SN8355 plants supporting SN15 plants and thereby inhibiting lodging of the composite population; the effect of mixed cropping was strongest. Furthermore, compared with the sole cropping and intercropping treatments, the mixed cropping of SN8355 and SN15 significantly improved the yield stability of wheat population. These results suggested that mixed cropping could inhibit the occurrence of lodging completely via lodging-resistant wheat cultivars providing both lateral and longitudinal support for lodging-susceptible cultivars, thus significantly enhancing the lodging resistance and yield stability of composite populations. The conclusion of this study could provide a theoretical basis to improve regulatory techniques for effectively inhibiting the occurrence of wheat lodging. [ABSTRACT FROM AUTHOR]