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Pushu 23

Published: 2024-11-08 Author: mysheen
Last Updated: 2024/11/08, Variety approval No.: national Review Shu 2002005 crop species: sweet potato variety name: Pushu 23 breeding unit: Guangdong Puning Institute of Agricultural Sciences Variety Source: female parent: Guangshu 87-58; male parent: Pushu 17-1. Provincial approval: characteristics approved by Guangdong crop Variety approval Committee in 1997: plant type semi-erect, top leaf purple, leaf pointed heart-shaped, leaf medium size, vein green, stem purplish.

Variety approval number: national examination and approval of potato 2002005

Crop type: sweet potato

Variety name: Pushu 23

Breeding unit: agricultural Science Research Institute of Puning City, Guangdong Province

Variety source: female parent: Guangshu 87-58; male parent: Pushu 17-1.

Provincial examination and approval: the characteristics approved by the crop Variety approval Committee of Guangdong Province in 1997 are as follows: plant type semi-erect, top leaf purple, leaf pointed heart-shaped, leaf medium size, leaf vein green, stem purplish, stem thin, short vine much branched, vine length 95cm 120cm, single plant branch 1216mm, potato block swelling, potato skin yellowish, potato meat yellow, sweet taste, potato shape beautiful, smooth, high commercial potato rate. Good storability and sprouting. Precocious, generally 25-30 days to produce potatoes, 120-130 days to harvest. The drying rate was 29.25%, the taste score was 79.7, slightly lower than the control, the starch rate was 18.07%, and the vitamin C content was 22.17 mg / 100 g. Identified by the Institute of Agricultural Sciences of Puning City, Guangdong Province, resistance to potato blast in the field, indoor inoculation identified as Ⅰ group high susceptibility, Ⅱ group susceptibility, moderate susceptibility to vine disease.

Yield performance: in the national regional trials of sweet potato varieties in southern China in 1999 and 2000, the average yield of fresh potato per mu in two years was 2017 kg, which was 77.44% higher than that of Guangshu 88-70, reaching a very significant level. In 2001, the production experiment of Guangxi Maize Institute showed that the yield of fresh potato per mu was 1839.5 kg, which was 22.2% higher than that of the control Baise high quality variety, the dry matter rate was 28.5%, and the yield of dry potato per mu was 524.3 kg, 23.5% higher than that of the control species. In the production test in Chaozhou City, Guangdong Province, the yield of fresh potato per mu was 3432 kg. Compared with Pushu 6, the yield of dry potato per mu was 30.7%, and the yield of dry potato per mu was 1053.5 kg, 33.6% higher than that of the control.

Key points of cultivation techniques: tender and strong seedlings should be selected, properly close planting, increase the number of tubers, the density is about 4000 plants / mu, summer seed potatoes can be slightly deeper, and thick soil should be cultivated in time after cracking, so as to prevent high temperature sunburn and rodent damage. One month after planting, nitrogen, phosphorus and potassium compound fertilizer was applied again.

The approval opinion of the National quality Review Committee: after examination, the variety conforms to the national sweet potato variety approval standard and has been approved. It is suitable for planting in Guangdong, Guangxi, Fujian, Jiangxi and other provinces.

 
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