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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (5): 778-.doi: 10.19802/j.issn.1007-9084.2020138

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Breeding of a high oil-content restorer line 4061R for dominant genic male sterile in rapeseed

  

  • Online:2021-11-01 Published:2021-11-01

Abstract: To breed high oil and double-low (low erucic acid and low glucosinolates) restorer with morphological marker for dominant genic male sterile in rapeseed, breeding materials with lobed-leaf, high oil content or restoring gene were utilized as parents. The restorer line 4061R with lobed-leaf, high oil-content and precocious feature was obtained through composite-crossing combined with directional selection. The field test and quality analysis showed that 4061R had lobed leaves with total growth period of 210 d, plant height of 156.2 cm, seed number per siliqua of 20.1, silique numbers of per plant of 300.2, 1000-seed weight of ~4.3 g. In Shanghai, yield of 2219.7 kg/hm2 was obtained under 18.5×104 plants/hm2. The restorer seed oil-content was 50.6%, with erucic acid 0.7%, and glucosinolate 19.6 μmol/g detected by near-infrared reflectance spectroscopy. Thus 4061R was an ideal restorer line with better comprehensive properties.

Key words: rapeseed, dominant genic male sterile restorer, lobed leaf, oil-content

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