-
Introduction to Brown Spot Disease of Southern Magnolia
Symptoms: The pathogen mainly infects the leaves. On the surface of diseased leaves, small light brown or yellow spots first appear, then expand into round or irregular lesions, 5-12 mm in diameter, with dark brown edges and grayish-white centers, on which many small black dots are borne. Adjacent lesions may merge with each other into irregular large necrotic areas. The disease generally begins in summer, and damage is more severe in August-September. Pathogen and current disease status: Southern magnolia brown spot disease, also known as leaf spot disease, is a common disease of southern magnolia. It occurs in all regions of China where southern magnolia is cultivated, with more severe occurrence in Suzhou, Nanjing, Wuhan,
-
Introduction to the Dawutong 29 Series Welsh Onion Variety
Variety origin: A new line selected by the Zhangqiu County Agricultural Bureau of Shandong Province after line selection and rejuvenation of Dawutong. It has passed crop variety approval in Shandong Province. Characteristics: The plant is tall, with a plant height of 1.3-1.5 m. Each plant has 5-7 functional leaves. The leaf surface has a thick waxy bloom, and the leaf flesh is thick and tough. The leaf tips point upward or grow obliquely. The white stalk is 5-70 cm, cylindrical, not enlarged at the base, about 4 cm thick, pure white in texture, smooth and glossy, crisp and tender with abundant juice, low in fiber, and of excellent quality. The plant has strong growth vigor, is upright, and does not tiller. It has strong cold resistance, tolerates cold temperatures,
-
Introduction to the Characteristics of the E Mian 21 Cotton Variety
E Mian 21 is a mid-maturing, high-quality new cotton variety bred by the Hubei Academy of Agricultural Sciences from the hybrid progeny of (5512/PD4548)F1//Zhongmiansuo 12. Characteristics: This variety has a growth period of 128 days. It has a well-developed root system, a tower-shaped plant, a plant height of about 120 cm, thick and upright stems, relatively deeply lobed leaves, a relatively large corolla, creamy white anthers, relatively large oval bolls, and thin boll husks. From 1994 to 1995, it participated in the Hubei Provincial Cotton Variety Regional Trial, with an average lint yield of 85.32 thousand
-
Introduction to the Demian 800F1 Cotton Variety
Breeding unit Demian 800F1 is a new high-yield, high-quality, multi-resistant hybrid cotton variety exclusively developed by Denong Zhengcheng Seed Industry Co., Ltd. It passed the Anhui provincial approval in 2005. Characteristics and traits This variety has a whole growth period of about 134 days and belongs to the mid-maturing type; the plant is tower-shaped, with strong growth vigor and strong boll-setting ability, large bolls, thin boll shells, easy boll opening, easy picking, and relatively good cotton fiber quality, with a lint percentage of 42.1%. It is highly resistant to cotton bollworm and pink bollworm; highly resistant to Fusarium wilt and tolerant to Verticillium wilt, sets all three types of bolls, resists high temperature and drought, and does not senesce early, with strong stress resistance; the pre-frost boll rate is 86
-
Introduction to the Cotton Variety Dafengza 312
Emergence is relatively good, cotyledons are medium to slightly large, leaf color is green, and growth vigor is strong throughout the whole growth period. Plant shape is tower-shaped, the plant is relatively tall, and the stem is thick and sturdy. Leaves are relatively large, and leaf color is darker. Boll-setting ability is strong, bolls are oval, relatively large, boll shell is thin, and boll opening is smooth. Average results of the provincial regional trial: growth period 138 days, plant height 113.8 cm, fruit branches 18.2, bolls per plant 24.9, seed cotton weight per boll 5.9 g, large-sample lint percentage 39.7%, small-sample lint percentage 40.7%, seed index 10.6 g, pre-frost boll rate 89.3%. Fiber
-
Introduction to the Characteristics of the Chuangzamian No. 9 Cotton Variety
I. Approval Number: Su Shen Mian 200604. II. Origin and Type: Originally named "GKZ No. 9", it is a first-generation hybrid of medium-maturing upland cotton, developed in 2001 by Nantong Genesis Transgenic Seed Industry Co., Ltd. by crossing Guokang No. 22 x intermediate line 012. III. Adaptation Scope: Suitable for planting in light Fusarium wilt areas of Jiangsu Province (excluding the Xuzhou region). IV. Yield Level and Characteristics: Participated in the Jiangsu Provincial Regional Trial in 2002 and 2004, with a two-year average seed cotton yield of 266.6 kg
-
Detailed Introduction to the Cotton Variety Chuanza No. 9
(1) Variety origin: This variety was developed by the Cotton Research Institute of the Provincial Academy of Agricultural Sciences using the nuclear male-sterile dual-purpose line Kang A1 as the female parent, crossed with Zhong 12, a nationally promoted variety bred by the Cotton Research Institute of the Chinese Academy of Agricultural Sciences. (2) Characteristics: This hybrid has a whole growth period of 130-136 days, a plant height of 85-90 cm, a compact tower-shaped plant body, thick stems and branches, dark green leaf color, medium-sized leaves, good light penetration, relatively vigorous growth, strong boll-setting ability, oval bolls, thin boll hulls, and easy boll opening. The fiber is uniform with good color, the lint percentage is 41-43%, the single boll weight is 5-6 g,
-
Introduction to the Characteristics and Traits of the Chuanza No. 8 Cotton Variety
(1) Variety source: This is a first-generation cotton hybrid developed by Lezhi County Seed Company in 1988 by crossing the 473A dual-purpose line with Chuanbei No. 2. (2) Characteristics and traits: The growth period is 135 days, and it is a medium-early maturing upland cotton variety. During the seedling stage, growth and development are fast; the leaves are equal in size, and the leaf color is dark green; the plant type is compact, the fruiting branches are horizontal and evenly distributed, and air permeability is good; the plant height is 80-90 cm; during the flowering and boll-setting stage, growth is steady, flowering and boll setting are concentrated, the boll shell is thin and boll opening is smooth, there are many five-locule bolls, and the single boll weight is 5.08--5.15 g. Fiber color
-
Detailed introduction to the cotton variety Chuanza No. 11
Approved in Sichuan Province in 1999. Cumulative promotion of 8.5 million mu. (1) Variety source: Bred by the Cotton Research Institute of the Sichuan Academy of Agricultural Sciences by crossing the self-bred dual-resistant genic male sterile dual-purpose line Kang A2 as the female parent with the F10 superior line 2069, a descendant derived from the transfer of semi-wild Mexican cotton (Chuan 73-27 X Mexican cotton). (2) Characteristics: Medium-early maturing hybrid, medium plant height (about 88 m), the whole plant is tower-shaped, the first fruiting branch node is low (4-6 nodes), strong boll setting, good boll opening, large and small sample lint percentage 43
-
Detailed introduction to the cotton variety Chuanyou No. 1
(1) Combination source: This combination is a new type of cotton hybrid developed by the Cotton Research Institute of the Sichuan Academy of Agricultural Sciences using the cotton genic male sterile "two-line method" complete male sterile line MA as the female parent, crossed with Chuan 55 as the male parent. (2) Characteristics: The growth period is 128-131 days, belonging to the early-medium maturity type; growth and development are rapid during the seedling and bud stages, with vigorous growth in the early and middle stages; plant height is medium, forming a tower shape, with fruit branches borne at relatively low nodes and good ventilation and light penetration, and leaves are medium-sized and dark green. Bolls are large, oval and slightly pointed, with a single boll weight of 5.16 grams; lint
条件筛选