[1] 李新委, 谢世友, 马燕.山核桃营养价值与种植经济效益分析[J].农学学报, 2015, 5(2):51-56.

LI Xinwei, XIE Shiyou, MA Yan. Analysis of pecan nutritional value and planting economic benefit[J]. J Agric, 2015, 5(2):51-56.
[2] 李新委, 谢世友.石漠化地区种植山核桃经济效益分析[J].安徽农学通报, 2014, 20(13):57-60.

LI Xinwei, XIE Shiyou. Analysis on the economic benefit of walnut plant in rocky desertification area[J]. Anhui Agric Sci Bull, 2014, 20(13):57-60.
[3] 黄坚钦, 章滨森, 陆建伟, 等.山核桃嫁接愈合过程的解剖学观察[J].浙江林学院学报, 2001, 18(2):111-114.

HUANG Jianqin, ZHANG Binsen, LU Jianwei, et al. Anatomical observation in graft union of Carya cathayenisis[J]. J Zhejiang For Coll, 2001, 18(2):111-114.
[4] 王白坡, 程晓建, 喻卫武.山核桃嫁接育苗成活率探讨[J].浙江林学院学报, 2002, 19(3):231-234.

WANG Baipo, CHENG Xiaojian, YU Weiwu. Inquiry into survival rate of Carya cathayensis seedlings in grafting[J]. J Zhejiang For Coll, 2002, 19(3):231-234.
[5] 叶茂富, 吴厚钧.山核桃与薄壳山核桃杂交的研究[J].林业科学, 1965, 10(1):50-56.

YE Maofu, WU Houjun. Hybridization in hickory(C. cathayensis)and peacan(C. illinoensis)[J]. Sci Silv Sin, 1965, 10(1):50-56.
[6] 沈林, 张慧, 曾燕如, 等.山核桃与美国山核桃正反交种实及苗期性状的分析[J].江西农业大学学报, 2009, 31(5):885-891.

SHEN Lin, ZHANG Hui, ZENG Yanru, et al. Analysis of fruit, seed and juvenile traits resulting from reciprocal crosses between C. cathayensis and C. illinoensis[J]. Acta Agric Univ Jiangxi, 2009, 31(5):885-891.
[7] 王静, 吕芳德.我国山核桃属植物研究进展[J].经济林研究, 2012, 30(1):138-142.

WANG Jing, LÜ Fangde. Advances in research on Carya Nutt. in China[J]. Nonwood For Res, 2012, 30(1):138-142.
[8] 吕芳德, 杨帆, 张日清.山核桃属部分种的核型分析[J].中南林学院学报, 2002, 22(1):47-49.

LLÜ Fangde, YANG Fan, ZHANG Riqing. Karyotypes of three Carya Nutt. species[J]. J Central South For Univ, 2002, 22(1):47-49.
[9]

ZHANG Bin, WANG Zhengjia, JIN Songheng, et al. A pattern of unique embryogenesis occurring via apomixis in hichory (Carya cathayensis)[J]. Biol Plant, 2012, 56(4):620-627.
[10] 沈林, 郭金剑, 李阳, 等.基于AFLP分析的山核桃群体结构及遗传多样性[J].福建林业科技, 2009, 36(4):84-86.

SHEN Lin, GUO Jinjian, LI Yang, et al. Population structure and genetic diversity of Carya cathayensis revealed by AFLP analysis[J]. J Fujian For Sci Technol, 2009, 36(4):84-86.
[11] 李元春, 沈林, 曾燕如.山核桃SRAP体系的建立及与RAPD和ISSR标记的比较[J].浙江农林大学学报, 2011, 28(3):505-511.

LI Yuanchun, SHEN Lin, ZENG Yanru. Establishment of a SRAP analysis protocol in Carya cathayensis and a comparison among SRAP, RAPD, ISSR analysis protocols[J]. J Zhejiang A & F Univ, 2011, 28(3):505-511.
[12]

LI Juan, ZENG Yanru, SHEN Dengfeng, et al. Development of SSR markers in hickory (Carya cathayensis Sarg.) and their transferability to other species of Carya[J]. Curr Genomics, 2014, 15(5):357-379.
[13]

YIN Danni, ZHU Xuli, JIANG Libo, et al. A reciprocal cross design to map the genetic architecture of complex traits in apomictic plants[J]. New Phytol, 2015, 205(3):1360-1367.
[14]

AUSIN I, FENG S H, YU C W, et al. DNA methylome of the 20-gigabase Norway spruce genome[J]. Proc Nat Acad Sci, 2016, 113(50):1-8.
[15]

BAROUX C, RAISSIG M T, GROSSNIKLAUS U. Epigenetic regulation and reprogramming during gamete formation in plants[J]. Curr Opin Genet Dev, 2011, 21:124-133.
[16]

WANG Wensheng, HUANG Fei, QIN Qiao, et al. Comparative analysis of DNA methylation changes in two rice genotypes under salt stress and subsequent recovery[J]. Biochem Biophys Res Commun, 2015, 465(4):790-796.
[17] 王忠华, 王迪. DNA甲基化分析技术在动植物遗传育种中的应用[J].生命科学, 2013, 25(4):435-441.

WANG Zhonghua, WANG Di. Application of DNA methylation analysis in genetics and breeding of plants and animals[J]. Chin Bull Life Sci, 2013, 25(4):435-441.
[18] 李海林, 吴春太, 李维国.巴西橡胶树DNA甲基化的MSAP分析[J].分子植物育种, 2011, 9(1):69-73.

LI Hailin, WU Chuntai, LI Weiguo. Analysis on DNA methylation of rubber by mehylation sensitive amplification polymorphism[J]. Mol Plant Breed, 2011, 9(1):69-73.
[19] 洪舟, 施季森, 郑仁华, 等.杉木亲本自交系及其杂交种DNA甲基化和表观遗传变异[J].分子植物育种, 2009, 7(3):591-598.

HONG Zhou, SHI Jisen, ZHENG Renhua, et al. Epigenetic inheritance and variation of DNA methylation in Chinese Fir(Cunninghamia lanceolata) intraspecific hybrids[J]. Mol Plant Breed, 2009, 7(3):591-598.
[20] 王聪聪, 李际红, 邢世岩, 等.不同单株叶籽银杏DNA甲基化MSAP分析[J].分子植物育种, 2013, 11(4):551-558.

WANG Congcong, LI Jihong, XING Shiyan, et al. Analysis on DNA methylation of Ginkgo biloba L. var. epiphylla Mak. by MSAP[J]. Mol Plant Breed, 2013, 11(4):551-558.
[21]

AVRAMIDOU E V, DOULIS A G, ARAVANOPOULOS F A. Determination of epigenetic and genetic inheritance, and estimation of genome DNA methylation in a full-sib family of Cupressus sempervirens L.[J]. Gene, 2015, 562:180-187.
[22] 魏华丽, 吴涛, 杨文华, 等.落叶松体细胞胚胎发生过程中DNA甲基化模式变化分析[J].东北林业大学学报, 2011, 39(2):33-37.

WEI Huali, WU Tao, YANG Wenhua, et al. DNA methylation pattern changes during somatic embryogenesis of Larix[J]. J Northeast For Univ, 2011, 39(2):33-37.
[23] 马开峰, 张志毅, 王斯琪, 等.毛白杨MSAP体系优化及DNA甲基化的初步分析[J].东北林业大学学报, 2012, 40(12):1-7.

MA Kaifeng, ZHANG Zhiyi, WANG Siqi, et al. Optimization of MSAP system and preliminary analysis of DNA methylation in Populus tomentosa[J]. J Northeast For Univ, 2012, 40(12):1-7.
[24] 郭金剑.山核桃群体结构及多样性的研究[D].杭州: 浙江农林大学, 2008.

GUO Jinjian. Study of Population Structure and Diversity in Carya cathayensis Sarg.[D]. Hangzhou: Zhejiang A & F University, 2008.
[25] 刘冰.平菇主栽品种DNA甲基化敏感扩增多态性(MSAP)分析[D].武汉: 华中农业大学, 2013.

LIU Bing. Methylation Sensitive Amplification Polymorphism (MSAP) Analysis of Mainly Cultivated Oyster Mushroom[D]. Wuhan: Huazhong Agricultural University, 2013.
[26] 吕晓婷, 赵春梅, 王爱华, 等.苹果MSAP技术体系的优化及其应用[J].中国农业通报, 2012, 28(22):287-292.

LLÜ Xiaoting, ZHAO Chunmei, WANG Aihua, et al. Optimization and establishment of MSAP reaction system for apple[J]. Chin Agric Sci Bull, 2012, 28(22):287-292.
[27] 洪柳, 邓秀新.应用MSAP技术对脐橙品种进行DNA甲基化分析[J].中国农业科学, 2005, 38(11):2301-2307.

HONG Liu, DENG Xiuxin. Analysis of DNA methylation in navel oranges based on MSAP marker[J]. Sci Agric Sin, 2005, 38(11):2301-2307.
[28] 高寰, 张铮, 周婷, 等.三叶木通MSAP反应体系的优化及引物筛选[J].中草药, 2012, 43(3):572-576.

GAO Huan, ZHANG Zheng, ZHOU Ting, et al. Optimization of MSAP reaction system for Akebia trifoliata and primers screening[J]. Chin Tradit Herbal Drugs, 2012, 43(3):572-576.
[29]

PÉREZ-FIGUEROA A. msap:a tool for the statistical analysis of methylation-sensitive amplified polymorphism data[J]. Mol Ecol Resour, 2013, 13(3):522-527.
[30]

FLETCHER H, HICKEY I. BIOS Instant Notes in Genetics[M]. 4th Ed. Boca Raton:CRC Press, 2013.
[31]

GUPTA V, BIJO A J, KUMAR M, et al. Detection of epigenetic variations in the protoplast-derived germlings of Ulva reticulata using methylation sensitive amplification polymorphism (MSAP)[J]. Marine Biotechnol, 2012, 14(6):692-700.
[32] 杜亚琼, 王子成, 李霞, 等.土霉素胁迫下拟南芥基因组DNA甲基化的MSAP分析[J].生态学报, 2011, 31(10):2846-2853.

DU Yaqiong, WANG Zicheng, LI Xia, et al. MSAP analysis of DNA methylation in Arabidopsis(Arabidopsis thaliana) under Oxytetracycline stress[J]. Acta Ecol Sin, 2011, 31(10):2846-2853.
[33]

SCHULZ B, ECKSTEIN R L, DURKA W. Scoring and analysis of methylation-sensitive amplification polymorphisms for epigenetic population studies[J]. Mol Ecol Resour, 2013, 13(4):642-653.
[34]

HERRERA C M, BAZAGA P. Epigenetic differentiation and relationship to adaptive genetic divergence in discrete populations of the violet Viola cazorlensis[J]. New Phytol, 2010, 187(3):867-876.
[35]

YEGNASUBRAMANIAN S, LIN X, HAFFNER M C. Combination of methylated-DNA precipitation and methylation-sensitive restriction enzymes (COMPARE-MS) for the rapid, sensitive and quantitative detection of DNA methylation[J]. Nucleic Acids Res, 2006, 34(3):e19. doi:10.1093/nar/gnj022.
[36]

MASSICOTTE R, ANGERS B. General-purpose genotype or how epigenetics extend the flexibility of a genotype[J]. Gene Res Int, 2012, 2012:1-7. doi:10.1155/2012/317175.
[37]

WANG Jun, FAN Chuanzhu. A neutrality test for detecting selection on DNA methylation using single methylation polymorphism frequency spectrum[J]. Genome Biol Evol, 2015, 7(1):154-171.
[38]

KEUNG A J, KHALIL A S. Single-cell tracking reveals a common "algorithm" of operation used by chromatin regulators[J]. Science, 2016, 351(6274):661-662.
[39] 李顺福, 胡恒康, 张秋露, 等.基于ISSR分子标记技术的山核桃幼胚DNA甲基化初步研究[J].浙江农林大学学报, 2014, 31(4):521-527.

LI Shunfu, HU Hengkang, ZHANG Qiulu, et al. ISSR analysis of DNA methylation variety on immature embryos of Carya cathayensis[J]. J Zhejiang A & F Univ, 2014, 31(4):521-527.
[40]

SAILER C, SCHMID B, GROSSNIKLAUS U. Apomixis allows the transgenerational fixation of phenotypes in hybrid plants[J]. Curr Biol, 2016, 26:331-337.
[41]

NISHIYAMA A, YAMAGUCHI L, NAKANISHI M. Regulation of maintenance DNA methylation via histone ubiquitylation[J]. J Biochem, 2016, 159(1):9-15.
[42]

ZHONG Silin, FEI Zhangjun, CHEN Yunru, et al. Single-base resolution methylomes of tomato fruit development reveal epigenome modifications associated with ripening[J]. Nat Biotechnol, 2013, 31(2):154-160.
[43]

WANG Wensheng, PAN Yajiao, ZHAO Xiuqin, et al. Drought-induced site-specific DNA methylation and its association with drought tolerance in rice (Oryza sativa L.)[J]. J Exp Bot, 2011, 62:1951-1960.
[44] 陈小强, 王春国, 李秀兰, 等.大花蕙兰子房授粉前后基因组DNA胞嘧啶甲基化状态的MSAP分析[J].云南植物研究, 2008, 30(4):464-470.

CHEN Xiaoqiang, WANG Chunguo, LI Xiulan, et al. Analysis of DNA cytosine methylation between the non-pollinated and pollinated ovaries of Cymbidium hybridium(Orchidaceae)based on MSAP[J]. Acta Bot Yunnan, 2008, 30(4):464-470.
[45] 崔影影, 张大明.野生稻Oryza nivaraO. rufpogon DNA甲基化多样性[J].生物多样性, 2010, 18(3):227-232.

CUI Yingying, ZHANG Daming. Surveying DNA methylation diversity in the wild rice, Oryza nivara and O. rufipogon[J]. Biodiversity Sci, 2010, 18(3):227-232.
[46] 段永红, 王铭, 孙毅, 等.高粱甲基化连锁群A, B的构建及甲基化位点、甲基化模式的分析[J].中国农业科学, 2012, 45(18):3699-3708.

DUAN Yonghong, WANG Ming, SUN Yi, et al. Construction of methylation linkage groups A and B in sorghum with MSAP and SSR markers and analysis of methylation sites and patterns[J]. Sci Agric Sin, 2012, 45(18):3699-3708.
[47]

OZIAS-AKINS P, CONNER J A. Regulation of apomixis[C]//ALTMAN A. Plant Biotechnology and Agriculture-Prospects for the 21st Century. Pittsburgh: Academic Press, 2011: 243-254.
[48]

HAND M L, KOLTUNOW A M G. The genetic control of apomixis:asexual seed formation[J]. Genetics, 2014, 197:441-450.
[49]

RODRIGUEZ-LEAL D, VIELLE-CALZADA J P. Regulation of apomixis:learning from sexual experience[J]. Curr Opin Plant Biol, 2012, 15:549-555.
[50]

GRIMANELLI D. Epigenetic regulation of reproductive development and the emergence of apomixis in angiosperms[J]. Curr Opin Plant Biol, 2012, 15:57-62.
[51]

ABDI S, SHASHI, DWIVEDI A, et al. Harnessing Apomixis for Heterosis Breeding in Crop Improvement[M]. Beilin:Springer-Verlag, 2016:79-99.
[52]

SHIRASAWA K, HAND M L, HENDERSON S T, et al. A reference genetic linkage map of apomictic Hieracium species based on expressed markers derived from developing ovule transcripts[J]. Ann Bot, 2015, 115(4):567-580.
[53]

MAUA M, LOVELL J T, CORRAL J M, et al. Hybrid apomicts trapped in the ecological niches of their sexual ancestors[J]. Proc Nat Acad Sci, 2015, 112(18):E2357-65. doi:10.1073/pnas.1423447112.