不同燕麦品种田间倒伏性状研究

doi:10.16035/j.issn.1001-7283.2016.05.008

Abstract

Abstract:

Relationship between lodging resistance of 7 oat varieties and their plant height, plant weight, stem strength, stem diameter, length of the 1st stem nodes, dry weight of the 1st stem nodes, ear height and number of roots have been examined and analyzed. Results showed that lodging occurred in all 7 varieties, mostly at florescence. Lodging resistance of 7 varieties appeared Lina > Qingyan No.1 > Qinghai 444 > Qingyin No.1 > Qingyin No.2 > Qinghai Sweet Oat > Qingyin No.3 Naked. Plant weight and dry weight of the 1st stem node were critical factors for lodging of oats (P<0.01); plant height and ear height also affected lodging of oats (P<0.05). It is suggested that plant weight and dry weight of the 1st stem node should be more focused on during selection of breeding programs, rather than plant height.

Key words: Oats, Stem characteristics, Resistance to lodging

Youjun Chen,Qingping Zhou,Jian Sun,Lihua Tian. Comparison of Lodging Resistance among Different Oats (Avena sativa L.)[J].Crops, 2016, 32(5): 44-49.

Figures/Tables 10

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References 28

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品种Variety	编号Code
青引1号Qingyin No.1	Q1
青引2号Qingyin No.2	Q2
青引3号莜麦Qingyin No.3 naked oat	Q3
青海444 Qinghai 444	QH444
青燕1号Qingyan No.1	QY1
青海甜燕麦Qinghai sweet oat	QS
林纳Linna	LN

品种 Variety	播种期 Seeding date	出苗期 Seeding stage	分蘖期 Tillering stage	拔节期 Elongation stage	孕穗期 Booting stage	抽穗期 Heading stage	开花期 Flowering stage	生育天数(d) Growth days
Q1	5/23	6/08	6/25	7/20	7/25	8/13	8/28	95
Q2	5/23	6/03	6/20	7/11	7/20	8/06	8/17	84
Q3	5/23	6/01	6/18	7/14	8/09	9/07	9/20	117
QH444	5/23	6/05	6/23	7/18	7/23	8/08	8/23	90
QY1	5/23	6/05	6/23	7/18	7/23	8/08	8/23	90
QS	5/23	6/10	6/25	7/23	8/05	8/23	9/07	104
LN	5/23	6/08	6/25	7/25	8/07	8/28	9/10	107

品种Variety	倒伏率Rate of lodging
Q1	30
Q2	40
Q3	65
QH444	25
QY1	20
QS	40
LN	20

品种Variety	茎秆抗折断力Breaking resistance(N)	茎长Culm length(cm)	单穗鲜重Weight(g)	抗倒伏性指数Lodging resistance index(N/cm.g)
Q1	12.94	83.20	4.80	0.40b
Q2	6.21	102.64	2.42	0.39bc
QS	20.86	84.40	5.44	0.22c
QY1	6.61	74.10	5.70	0.69ab
LN	7.51	94.00	6.46	0.88a
Q3	28.28	57.32	5.48	0.11c
QH444	9.35	73.60	7.46	0.59b

茎秆倒伏指数 Critical force of stem	茎粗(cm) Stem diameter	株高(cm) Plant height	根长(cm) Root length	穗位高度(cm) Ear height	单株干重(g) Plant dry weight	第一茎节间长(cm) Stem length of the first section	第一茎节间干重(g) Stem dry weight of the first section
Pearson Correlation	0.087	0.376^*	-0.233	0.382^*	0.472^**	0.068	0.476^**
Sig.(2-tailed)	0.620	0.026	0.179	0.023	0.004	0.697	0.004

Comparison of Lodging Resistance among Different Oats (Avena sativa L.)

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