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Frontiers of Agriculture in China

ISSN 1673-7334

ISSN 1673-744X(Online)

CN 11-5729/S

Front Agric Chin    2009, Vol. 3 Issue (1) : 29-33     DOI: 10.1007/s11703-009-0007-0
Research on the development of weed-suppressing rice varieties
Shaochuan ZHOU(), Decheng LU, Hong LI, Daoqiang HUANG, Ruowei MIAO
Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
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This study was conducted to develop weed-suppressing rice varieties in a weed-suppressing nursery by specific secondary metabolite markers of allelopathic potential. Weed-suppressing rice variety Feng-Hua-Zhan was screened out by a specific secondary metabolite marker of allelopathic potential. Weed-suppressing rice No.1, a new rice line with good quality, was also developed using this method. The genetic backgrounds and research directions of weed-suppressing rice varieties are discussed in this paper.

Keywords rice breeding      weed-suppressing      specific secondary metabolite     
Corresponding Authors: ZHOU Shaochuan,   
Issue Date: 05 March 2009
URL:     OR
length of growth period /dproductive panicles /104?hm-2plant height/cmpanicle length/cmspikelets/no. per paniclefilled grain/no. per panicleseed setting rate/%1000-grain weight/g
Tab.1  Agronomic traits of PI312777 in Guangzhou region
varietyearly-cropping seasonlate-cropping season
barnyard grassotherstotalbarnyard grassotherstotal
PI3127770.83 b57.33 b58.16 b8.5 b243.0 b251.5 b
Feng-Hua-Zhan1.00 b29.67 b30.67 b21.5 b435.0 ab456.5 b
Hua-Jing-Xian3.17 a359.84 a363.01 a116.5 a630.0 a746.5 a
Tab.2  Multiple comparisons among the Nos. of weeds accompanying different rice varieties (plant·10m)
varietyearly-cropping seasonlate-cropping season
barnyard grassotherstotalbarnyard grassotherstotal
PI31277717.65 b46.10 b63.75 b25.00 b86.70 b111.70 b
Feng-Hua-Zhan17.45 b76.45 b93.90 b66.80 b130.00 b196.65 b
Hua-Jing-Xian76.69 a213.35 a290.20 a338.35 a278.30 a616.65 a
Tab.3  Multiple comparisons among dry mass weights of weeds accompanying different rice varieties (plant·10m)
varietybarnyard grasssessile alternantheradifformed galingalesmallflower galinsogaChinese sprangletopsheathed monochoriasand ammanniarice galingaleprocumbent pennisetum
PI 3127770.8 b0.5 b37.5 b0.80002.520
Feng-Hua-Zhan1.0 b1.0 b0.65 b1.51.5101.57.5
Hua-Jing-Xian3.15 a5.5 a328 a1.58.510.510.512.5
Tab.4  Multiple comparisons among the Nos. of different weeds accompanying different rice varieties (plant·10m)
cross combinationsgenerationselected lines
Mei-Xiang-Zhan 8//Ai-Xiu-Zhan/PI312777F519
Tab.5  Promising rice lines
traitLu-Te-Zhan/PI312777Jing-Xian 89 (CK)
productive panicles/104?hm-2264270
resistance to bacterial blight/class34
plant height/cm107.8102.6
panicle length/cm2220.2
spikelets No./grain156188
seed setting rate/%84.876.7
1000-grain weight/g17.617.2
duration from sowing to harvesting/d109114
amylose content/%14.2
Tab.6  Results of the contrast experiment in the late season of 2005
traitFeng-Si-Zhan/PI312777Feng-Hua-Zhan/Cypress/PI312777Feng-Hua-Zhan (CK1)PI312777(CK2)
yield /t?hm-25.354.445.003.40
±CK1/%,±CK2/%+6.95, +57.14–11.11, +30.61
productive panicles /104?hm-2243220.5232.5304.5
resistance to bacterial blight /class31-3110
plant height /cm96.894.592.382.2
panicle length /cm21.0321.8422.0719.74
spikelets No.117.4119.4120.568.6
seed setting rate /%78.48289.686.7
1000-grain weight /g22.8320.3819.321.74
duration from sowing to harvesting /d110105105108
Tab.7  Results of demonstration in the late season of 2005
1 Hu F, Kong C H, Xu X H, Zhang C X, Chen X H (2004). Weed-suppressive effect and its mechanism of allelopathic rice accessions. Sci Agric Sin , 37(8): 1160-1165 (in Chinese)
2 Kong C H, Hu F (2001). Allelopathy and Its Application. Beijing: China Agricultural Press (in Chinese)
3 Kong C H, Xu X H, Hu F, Chen X G, Ling B, Tan Z W (2002). Using specific secondary metabolites as markers to evaluate allelopathic potential of rice and their individual plants. Chin Sci Bull , 47(10): 839-843 (in Chinese)
doi: 10.1360/02tb9189
4 Kong C H, Xu X H, Zhou B, Hu F, Zhang C X, Zhang M X (2004). Two compounds from allelopathic rice accession and their inhibitory activity on weeds and pathogens. Phytochemistry , 65(8): 1123-1128
doi: 10.1016/j.phytochem.2004.02.017
5 Lu D C, Zhou S C, Li H, Huang D Q (2004). Study on weed-suppressing effect of allelopathic rice. Crops , (1): 20-22 (in Chinese)
6 Lu D C, Zhou S C, Li H, Huang D Q (2005). A preliminary study on weed-suppressing rice breeding. Chin J Ecol , 24(8): 963-966 (in Chinese)
7 Xu Z H, He Y, Cui S R, Zhao M, Zhang X, Li D (2003). Gene mapping on rice allelopathy against barnyardgrass. Chin J Appl Ecol , 14(12): 2258-2260 (in Chinese)
8 Zeng D L, Qian Q, Teng S, Dong G J, Teng B K, KUNIHIRO Y, Zhu L H (2003). Genetic analyses on rice allelopathy. Chin Sci Bull , 48(1): 70-73 (in Chinese)
doi: 10.1360/02ww0306
9 Zhou S C, Kong C H, Li H, Lu D C, Hu F (2005). Relationships between allelopathic traits and agronomic characters of allelopathic rice varieties. Chin J Appl Ecol , 16(4): 737-739 (in Chinese)
10 Zhou S C, Li H, Huang D Q, Lu D C, Lai S C, Zhou D G, Wang Z D, Miu R W, Li K H (2008). Practice and achievement of rice core germplasm breeding. Chin J Rice Sci , 22(1): 51-56 (in Chinese)
11 Zhu H L, Kong C H, Hu F, Ling B, Xu X H (2003). Evaluation methods for allelopathic potentials of germplasms. Sci Agric Sin , 36(7): 788-792 (in Chinese)
[1] ZHU Lihong. Some critical considerations on rice high-yielding breeding in China[J]. Front. Agric. China, 2007, 1(4): 389-396.
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