Yield and Fruit Improvement of Tomato Hybrids Using Male Sterile Mutant Line
Keywords:
heterosis, crossing, male parent, hybrid seed, early maturityAbstract
The present investigation conducted at the Institute of Plant and Agricultural Science of the Mongolian University Life Science in 2010-2012. The experimental material consisted of 10 tomato cross combinations and 10 check testers were included with male parents. A search was conducted in commercial plantings in Mongolia for the first time in tomato for male-sterile technique, potentially useful in producing F1 hybrid seed and in cross-breeding. The extent of heterosis for yield components and fruit characters of tomato in cross combinations involving tolerant accessions and processing varieties/lines/ is reported in this paper. We crossed the 7B-1 mutant a female parent with other tomato lines I-16398, MK-1846, I-23818, I-22936, MK-2926, MK-1881 as e,g and the hybrid seed produced was viable in terms of germination and plants showed normal growth and flowering. After the crossing the successful seed fertilization rate ranges between 41.7-88.9%, and the 7B-1 X MK-22872 crosses showed the highest performance of 88.9%. Our study revealed that it is possible to use MK-1881, MK-2926 for increasing early harvest, and MK-5805, Mk-1846 are for increasing total yield. These two hybrids could be used commercially for high yield.
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