Niveum) resistance in 51 accessions of tetraploid watermelon germplasm was identified in the seedlings through artificial inoculation,and inheritance of resistance was studied by analysis of variance of resistance in triploid watermelon combinations which were made with tetraploid and diploid watermelon using incomplete diallel mating method(NCⅡ).

In Vitro Culture of Tetraploids of Aloe vera L.;

The amylose contents of 14 tetraploid and 8 diploid rice varieties were tested, and microsatellite markers 484/ 485, Wxup2/485 and molecule marker PCR-AccⅠwere used to amplify Wx gene.

Comparison of Physiological Activity in Tetraploid Lines and Radiation Lines of Dioscorea Zingiberensis C.H.Wright;

Studies on Optimization of Tissue Culture in Autotetraploid Plant of Plalycodon Grandiflorum;

Identfication of Autotetraploid of Atractylodes Macrocephala Koidz. and Determination of Effective Constituents;

Tissue culture and induction of autotetraploid of Pueraria thomsonii;

Observation on formation and development of autotetraploid rice embryo sac using Laser Scanning Confocal Microscope;

To analyze heterosis of 16 main agronomic traits in autoteraploid hybrid rice,incomplete diallel cross(4×8) was designed according to NCⅡby using twelve autotetraploid rice lines.

The agronomic and cytogenetic characteristics of restorer lines T4002 and T4063 of autotetraploid rice were studied.

Heterosis Utilization of Interspecific Hybrids Between Autotetraploid Sorghum and Johnsongrass;