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3.Propagation modes and breeding of forage Qize 1

1、 问题:As of 2015, there are () forage varieties in China
选项:
A:184
B:268
C:46
D:55
答案: 【184

2、 问题:There are () herbage germplasm resource centers and () herbage germplasm resource nurseries in China.
选项:
A:17
B:10
C:17
D:10
答案: 【17

3、 问题:Alfalfa mainly originated in () center
选项:
A:Western Asia
B:Ethiopia
C:South America
D:Central Asia and Western Asia
答案: 【Western Asia

4、 问题:The effective number of samples collected from self pollinating plant germplasm is
选项:
A:Less than 50 individual plants
B:50 individual plants
C:50-100 single plants
D:More than 100 single plants
答案: 【Less than 50 individual plants

5、 问题:Up to 2015, there are () forage germplasms preserved in China forage germplasms center
选项:
A:34 000
B:15 000
C:8 000
D:28 000
答案: 【34 000

6、 问题:China’s Grass Cultivar Approval Committee was established in
选项:
A:1987
B:1980
C:2005
D:2008
答案: 【1987

7、 问题:The forage cultivars selected by space mutation are
选项:
A:Zhongsha No.1
B:Zhongmu No.1
C:Zhonglan No.1
D:Junxu No.1
答案: 【Zhongsha No.1

8、 问题:Compared with Crop Breeding, Forage Breeding has the following characteristics:
选项:
A:Diverse biological characteristics
B:Taking stem and leaf as the main breeding objective, taking resistance and seed yield breeding into account
C:Most of them are self pollination
D:All of them can be asexually propagated
答案: 【Diverse biological characteristics;
Taking stem and leaf as the main breeding objective, taking resistance and seed yield breeding into account

9、 问题:The main target traits of quality improvement of forage and forage crops are as follows:
选项:
A:Nutritive value
B:Palatability
C:Digestibility
D:Toxic and harmful components
答案: 【Nutritive value;
Palatability;
Digestibility;
Toxic and harmful components

10、 问题:Forage and forage crop germplasm resources can be divided into:
选项:
A:Local germplasm resources
B:Foreign germplasm resources
C:Wild germplasm resources
D:Artificially created germplasm resources
答案: 【Local germplasm resources;
Foreign germplasm resources;
Wild germplasm resources;
Artificially created germplasm resources

11、 问题:The main contents of forage germplasm resources observation records include the following:
选项:
A:Observation of growth period
B:Morphological observation
C:Observation on agronomic traits
D:Identification of resistance to adversity
E:Genetic observation
答案: 【Observation of growth period;
Morphological observation;
Observation on agronomic traits;
Identification of resistance to adversity

12、 问题:The basic attributes of a good forage variety are
选项:
A:Specificity
B:Consistency
C:Stability
D:Resistance
E:Yield
答案: 【Specificity;
Consistency;
Stability

13、 问题:The main yield target traits of forage and forage crops are
选项:
A:Forage yield
B:Seed yield
C:Regeneration and cutting
D:Density and branching (tillering) ability
E:Plant type
答案: 【Forage yield;
Seed yield;
Regeneration and cutting;
Density and branching (tillering) ability;
Plant type

14、 问题:The main identification methods of Germplasm Resources are:
选项:
A:Indoor identification
B:Field identification
C:Morphological observation
D: Genetic identification
答案: 【Indoor identification;
Field identification

15、 问题:The main agronomic traits of forage germplasm resources were ()
选项:
A:Yield
B:Number of Leaf
C:Regeneration
D:Sustainability
E:Quality
答案: 【Yield;
Number of Leaf;
Regeneration;
Sustainability;
Quality

16、 问题:The principles to be followed in formulating breeding objectives are
选项:
A:respond to the needs of local production development
B:distinguish primary and secondary, and make clear and specific
C:pay attention to setting cross combination for cultivars
D:to be proactive
E:breeding of high yield, high quality and resistance
答案: 【respond to the needs of local production development;
distinguish primary and secondary, and make clear and specific;
pay attention to setting cross combination for cultivars;
to be proactive

17、 问题:()compose the density of forage community together and affects the high yield of forage.
选项:
A:Number of plants per unit area
B:Number of branches
C:Tillers per plant
D:Plant height
答案: 【Number of plants per unit area;
Number of branches;
Tillers per plant

18、 问题:The main forage cultivars in China are
选项:
A:Medicago
B:Leymus
C:Triticale
D:Elymus
答案: 【Medicago;
Leymus;
Triticale

19、 问题:The main components including() in forage affect its palatability.
选项:
A:Crude fiber
B:Sugar
C:Aromatic hydrocarbon

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