TITLE:
Study on the Pollen Thermo-Sensitive and Stigma Exsertion Male Sterile Line Tomato (Lycopersicon esculentum Mill.) cv. Da107
AUTHORS:
Qinzhi Yu, Congyao Liang, Xianyu Wang, Yongcheng Du, Masaharu Masuda, Kenji Murakami
KEYWORDS:
Lycopersicon esculentum Mill., Pollen-Thermo-Sensitivity Male Sterility, Stigma-Exsertion Male Sterility, Pollen Germination, Seed Contamination Rate
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.6 No.16,
October
12,
2015
ABSTRACT: To accelerate the breeding process, male sterile line is used to leave out the troublesome procedures
of the artificial emasculation in tomato breeding. However, the fertility of the pollen thermo-sensitivity male sterile line (PTMSL) and the stigma exsertion male sterile line (SEMSL) are
affected easily by the environments when used alone. The trial materials were Da107 and the
control was First. This study was conducted to create a new male sterile line of tomato characterized
by pollen thermo-sensitivity and long style by genic recombination through the hybridizing
of the PTMSL and SEMSL. Research on the statistics of the pollen germination rate, the contamination
rate in F1 and the flower organics indicated that Da107 was an ideal TS and SE male sterile
line with the sterility of 95%, as well as it also could be used as fertile line at low temperature.
Meanwhile, the results showed that hybrid-seed contamination risk with selfed seeds from residual
fertility in Da107 was low.