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Chinese Agricultural Science Bulletin

Abbreviation (ISO4): Chin Agric Sci Bull      Editor in chief: Yulong YIN

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Breeding of High-yield and Double-low Rapeseed Hybrid (Brassica napus L.) Chuanyou No.33

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Online published: 2005-05-04

Abstract

Chuanyou No.33, a double-low and high-yield CMS rapeseed hybrid ( Brassica napus L.), whose former name was ZA-9, was developed from JA8( double-low POL CMS system ) × JR8( a double-low restorer ). Chuanyou No.33 showed great hybrid superiority. The cultivar possessed the characteristics of desired agronomic quality, double-low, high yield, high oil content, early maturity, wide adaptability and acceptable resistance( tolerance ) to virus and S. sclerotiorum. In the regional tests of Sichuan, the average yield of Chuanyou No.33 was 2350.5 kg/hm2, which outyielded the control Shuza No.6 by 12.58% in 2003, with a high significance. The average yield of Chuanyou No.33 was 2314.5 kg/hm2, which outyielded the control Shuza No.6 by 9.98% in 2004, with a high significance. In the five-regional productive test , the average yield of Chuanyou No.33 was 2200.5 kg/hm2, which outyielded the control Shuza No.6 by 16.2% in 2003-2004, with a high significance . In hybrid seed F1, its erucic acid content was 0.1% in oil, glucosinolates content was 22.89 μmol/g in meal, and oil content was 40.81% in dry base. In commodity seed F2, its erucic acid content was 1.02% in oil, glucosinolates content was 27.82 μmol/g in meal, and oil content was 39% in dry base. Its resistance (tolerance) to virus and S. sclerotiorum was very stronger. The growth period of Chuanyou No.33 was 215 days, which was 1~2 days shorter than Shuza No.6, averagely. It was released by Sichuan Crop Variety Approval Committee in October 2004 and recommended to be the main popularized variety in Sichuan province.

Cite this article

Pu Xiaobin,, Jiang Liangcai , Zhang Jinfang, Li Haojie, Zhang Qixing . Breeding of High-yield and Double-low Rapeseed Hybrid (Brassica napus L.) Chuanyou No.33[J]. Chinese Agricultural Science Bulletin, 2005 , 21(5) : 177 -177 . DOI: 10.11924/j.issn.1000-6850.0505177

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