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Problems solved by technology
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Problems solved by technology
From screening parental combinations to obtaining hybrid seedlings, one often has to experience pollination stigma abortion, underdeveloped seeds, difficulty in emergence of hybrids, unstable variety characteristics, easy degradation, and infertility of hybrid offspring, etc.
These factors have seriously affected the progress of hybrid breeding
There have been reports at home and abroad on the research on the compatibility of distant hybridization of roses, but the root cause of the incompatibility mechanism has not been clarified so far
Method used
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Effect test
Embodiment 2
[0081] No. 1 Zhongtian Rose (ToproseNo: 1) of embodiment 1 is carried out stress resistance experiment, specifically as follows:
[0082] Cold tolerance: Xinjiang Karamay Oilfield Greening Department was entrusted to plant 1,200 Zhongtian Rose No. 1 (Toprose No: 1) in its base to carry out the cold tolerance test for overwintering. Through practice, in the first year of planting, water control and fertilizer saving measures are taken to prevent excessive growth of branches, so that they can fully form woody quality, and better solve the problem of safe overwintering at minus 38 ℃. The test results show that the average cold resistance index of Rose Zhongtian is 0.3, the frostbite length of the branches is less than 10%, and there is basically no frostbite.
[0083] Saline-alkali resistance: Inner Mongolia Hangjin Banner and other coastal and inland saline-alkaline areas conducted a saline-alkali experiment on Zhongtian Rose No. 1 (Toprose No: 1). It grows well in soda alkalin...
Embodiment 3
[0090] The flowers of different rose varieties are extracted with steam distillation. The extraction process parameters are: liquid-to-solid ratio 4:1, distillation time 4h, distillation speed 200mL / h (distillate of 10% distillate volume per hour) ), the charging capacity is 75% of the distiller. The experimental results are shown in Table 3.
[0091] table 3
[0092]
[0093] From the data in Table 3, it can be seen that the rose rose balm rate of the present invention reaches 0.055, which is higher than that of rose damascena with high oil at present.
[0094] The chemical composition was determined by capillary gas chromatography-mass spectrometry.
[0095] Instrument: GC / 7AG chromatograph (Shimadzu, Japan), analytical column: quartz capillary column, 50m×0.3m, column temperature 80-180°C, 2°C / min temperature program, vaporization temperature 240°C, carrier gas is N 2 , the carrier gas flow rate is 60mL / min, and the injection port temperature is 240°C. Mass spectrome...
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Abstract
The invention provides a method of cultivating rose cultivars through distant backcross. The method comprises the following steps: rosa multiflora with cold resistance, drought resistance and saline-alkaline tolerance and traditional roses are hybridized through research, wherein a female parent A system is Rosa gugosacv. plena, a male parent B system is Rosa kokanica Regel ex juz.; an offspring F1 which has the comprehensive characters of the traditional rose of the female parent A system and the target characters of the rosa multiflora of the male parent B system is obtained by cultivation and screening after the hybridizing; the F1 is backcrossed with a recurrent parent A system for multiple times, the offspring of the F1 is self-crossed for purification, and a new generation stable hybrid rose variety, which has comprehensive characters and target characters and is capable of continuously flowering, is selected and obtained.
Description
technical field [0001] The invention belongs to the technical field of plant cultivation, and in particular relates to a method for cultivating rose varieties through distant backcrossing. Background technique [0002] The genus Rosa (Rosa L.) belongs to the Rosaceae Rosaceae. There are more than 200 species in the world, and 91 species are produced in China. Chinese rose, rose and Rosa are its representative plants. Roses are native to the Orient, but are now probably found all over the world, mainly in temperate regions. There are more than 100 different varieties of roses, including wild roses, and there are about 30,000 officially registered varieties of hybrids and varieties. [0003] At present, most roses are planted with traditional roses, which bloom in one season, have relatively poor resistance, low yield of essential oil, single fragrance type, low yield, and limited suitable growing areas. Therefore, developing new product rose is a technical problem to be sol...
Claims
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