Inducing method for booting and flowering of difficult-to-flower tropical species of sugarcane
A sugarcane and germplasm technology, which is applied in sugarcane cultivation, horticultural methods, botanical equipment and methods, etc., can solve the problems of low booting flowering rate, restrict the excavation and utilization of new tropical species, long induction period, etc., and achieve accelerated sugarcane breeding. process, improve the efficiency of excavation and utilization, and improve the effect of booting flowering rate
Pending Publication Date: 2022-04-08
SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI +1
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Problems solved by technology
However, from the perspective of the overall effect, problems such as long induction period, non-concentrated flowering period, and low booting flowering rate of difficult-to-flower germplasm, especially tropical species, still exist, which seriously limit the discovery and utilization of new tropical species, and have become a long-term sugarcane breeding program in my country. The "stuck neck" problem in the cultivation of new breeding parents
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Embodiment 1
[0035] 1. The typical tropical species of sugarcane, red leaf cane, luohancane, and striped cheriben, were used as test materials. They were planted in September of that year, with 6 buds planted per barrel, and 8g of compound fertilizer and 70% clothianidin were applied to each barrel during planting. Zine powder 1g, cover with soil and irrigate with water, cover with film to keep warm and moisturize after 2 days, and wait for axillary buds to germinate and emerge.
[0036] 2. After the plant grows to the age of 4 leaves, remove the film and weeding, and irrigate a sufficient amount of water every day; in March of the next year, spray an appropriate amount of 46% monocidal thuringiensis wettable powder with a concentration of 1:5000 in each bucket, To prevent the occurrence of stem borer seedlings, place the barrel-planted parents on a mobile flatbed, leave 3-4 plants in each barrel, cut off the excess plants with branch scissors, and add 3-4kg of red soil to each barrel. Irr...
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The invention provides an induction method for booting and blooming of sugarcane tropical species difficult to bloom, and relates to the technical field of blooming induction. On the basis of an existing sugarcane artificial photoperiod induction method, the light quality type, circadian rhythm regulation and control, the light supplementing time period and the light supplementing duration of an induction light source are improved, and finally an induction treatment method for effectively promoting the flowering of the tropical species is established. According to the induction method, the day and night rhythm is always kept in a bright period for 12 hours and 25 minutes in the induction period, and it is guaranteed that the parents are subjected to continuous dark period treatment for 11 hours and 35 minutes every day. When the method is used for treating the tropical seeds difficult to bloom, the tropical seeds can be booted in an induction period of three months at the soonest, and the tropical seeds bloom after the fourth month. Booting and flowering of the tropical species with the difficult-to-flower germplasm in the inland high-latitude area are achieved, the booting and flowering rate of the tropical species is greatly increased, and the method has the positive promoting effect on improvement of the excellent tropical species resource mining and utilization efficiency and acceleration of the sugarcane breeding process.
Description
technical field [0001] The invention belongs to the technical field of inducing flowering, and in particular relates to a method for inducing booting flowering of sugarcane difficult-to-flower tropical species. Background technique [0002] Sugarcane is the most important sugar crop in my country, and its sucrose production accounts for about 90% of the total sugar production in the country. Studies based on GISH and FISH techniques show that the chromosomes of modern sugarcane varieties are mainly composed of two species of Saccharum, of which the chromosomes from the tropical species (Saccharum officinarum) account for about 80%, and the chromosomes from the thin-stemmed wild species (Saccharum spontaneum) account for 80%. 10-15%, 5-10% are the recombined chromosomes of the two. Tropical species, also known as noble species, has 80 chromosomes in somatic cells and is the most important source of genes for high sugar and large stems in modern sugarcane cultivars. In the s...
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IPC IPC(8): A01G22/55A01G7/04A01G7/06
Inventor 陆鑫毛钧徐超华刘洪博田春艳孔春艳林秀琴李旭娟刘新龙李纯佳
Owner SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI