Effects of Elevated Ozone Concentration on Maize Photosynthesis and Grain Quality

doi:10.7668/hbnxb.2008.06.028

Abstract

Abstract: In recent years,the elevated ozone has some significant effects on plant photosynthesis,respiration,water availability and so on.Effects on maize photosynthesis,grain quality and yield were researched in open-top chambers under elevated ozone.The results showed that the photosynthesis rate,stomatal conductance and transpiration rate reduced significantly(p<0.05)under elevated ozone(80 nmol/mol)in whole growing season,but intercellular CO2 concentration declined first and ascended following and attained highly significance level(p<0.01),which illuminated the decrease of the photosynthesis rate was mainly attributed to stomatal limitation,then turned to non-stomatal limitation.chlorophyll a,chlorophyll b and chlorophyll(a+b)of the elevated ozone were lower obvious than that of control,but with the ratio of chlorophyll a to chlorophyll b declined first and ascended then.But with the lengthening of fumigation time,chlorophyll a,chlorophyll(a+b)and the ratio of chlorophyll a to chlorophyll b of the elevated ozone ascended first and declined then,which was different from chlorophyll b.The elevated ozone decreased grain quality of maize to some extent.Protein and starch content decreased,but the coarse fat content and the gross of protein and fat increased.100-grain weight,grain number per spike and weight per spike were lower than that of control(p<0.05),which revealed maize ability of photo-synthesis decreased and unbeneficial to plant growth under elevated ozone concentration.

Key words: Ozone concentration, Maize, Photosynthesis, Grain quality

CLC Number:

S513.01

FU Yu, ZHAO Tian-hong, SUN Jia-wei, CAO Ying, HU Ying-ying, XU Ling, SHI Yi. Effects of Elevated Ozone Concentration on Maize Photosynthesis and Grain Quality[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(6): 120-124. doi: 10.7668/hbnxb.2008.06.028.

/ / Recommend / Download Citations

URL: http://www.hbnxb.net/EN/10.7668/hbnxb.2008.06.028

http://www.hbnxb.net/EN/Y2008/V23/I6/120

References

[1] Fuhrer J,Booker F.Ecological issues related to ozone:Agricultural issues[J].Environ Internat,2003,29:141-154.
[2] Arnon D I.Copper Enzymes in isolated chloroplasts polyphenoloxidase in beta vulgaris[J].Plant Physiol,1949,24(1):1-15.
[3] 金明红,黄益宗.臭氧污染胁迫对农作物生长与产量的影响[J].生态环境,200312(4):482-486.
[4] Feng Y W,Ohta N,Shimizu H,et al.Decline of betula ermanii with special reference to ozone concentration at Mt.Mae-Shirane[J].Oku_Nikku,Japan Am J App Sci,2005,2(3):701-706.
[5] 谢居清,张保军.原位条件下臭氧对农作物生长的影响及防护[M].杨凌:西北农林科技大学出版社,2006:3-4.
[6] 郭建平,王春乙,温民,等.大气中O3体积分数变化对水稻的试验研究[J].作物科学,2001,27(6):822-825.
[7] 白月明,王春乙,刘铃,等.O3体积分数增加对油菜影响的试验研究[J].应用气象学报,2002,13(3):364-370.
[8] 郑启伟,王效科,冯兆忠,等.臭氧对原位条件下冬小麦叶片光合色素、脂质过氧化的影响[J].西北植物学报,2005,25(11):2240-2244.
[9] 白月明,王春乙,温民.CO2和O3体积分数倍增及其交互作用对大豆影响的试验研究[J].应用生态学报,2005,16(3):244-251.
[10] 李方民,王勋陵,岳明,等.人为扰动对黄帝陵侧柏生理生态学特性的影响[J].西北植物学报,2003,23(2):239-241.
[11] Lichtenthaler H K,Wallbum A R.Determination of total carotenoids and chlorophyll a and b of Leaf extracts in different solvents[J].Biochemical Society Transcations,1983,600:591-592.
[12] 谢志涛,谢甫绨,王海英,等.不同种植密度和施肥水平对大豆籽粒品质的影响[J].种子,2006,25(3):60-62.
[13] 谢居清,郑启伟,王效科,等.臭氧对原位条件下水稻叶片光合、穗部性状及产量构成的影响[J].西北农业学报,2006,15(3):27-30.
[14] 白月明,郭建平,刘玲,等.臭氧对水稻叶片伤害、光合作用及产量的影响[J].气象,2005,27(6):17-21.
[15] Fridovich I.Superoxide dismutase[J].Ann Rev Biochem,1975,44:147-159.
[16] 张巍巍,赵天宏,王美玉,等.臭氧浓度升高对银杏光合作用的影响[J].生态学杂志,2007,26(5):645-649.
[17] 韩天富,王金陵,杨庆凯,等.开花后光照长度对大豆化学品质的影响[J].中国农业科学,1997,30(2):47-53.
[18] 杨庆凯.论大豆蛋白质与油分含量品质的变化及影响的因素[J].大豆科学,2000,19(4):386-391.
[19] 郭建平,王春乙,白月明,等.大气中臭氧浓度变化对冬小麦生理过程和籽粒品质的影响[J].应用气象学报,2001,12(2):255-256.
[20] 赵天宏,史奕,王春乙,等.CO2和O3浓度倍增及其复合作用对大豆叶绿素含量的影响[J].生态学杂志,2003,22(6):117-120.
[21] 王勋陵,门晓棠.臭氧对几种园艺植物花粉萌发和花粉管生长的影响[J].西北植物学报,1991,1(1):50-56.

Please choose a citation manager

Content to export