长江下游地区味优高产协同粳稻的品种特性

doi:10.3864/j.issn.0578-1752.2024.04.015

摘要/Abstract

摘要：

【目的】探明长江下游地区味优高产协同粳稻品种共性农艺与生理特征，为实现区域稻米产量和品质协同提升提供理论依据和技术支撑。【方法】于2018年和2022年，分别采用14个和13个常规粳稻品种开展品种筛选试验，系统比较不同品种的产量及构成、食味品质及质构特性，以及生物量、茎鞘非结构性碳水化合物（NSC）、群体光合势（LAD）等农艺与生理指标的差异。【结果】品种间的食味值和产量具有较大变幅，为此，按食味值和产量进行聚类，将不同水稻品种分为味中低产（ML）、味中高产（MH）和味优高产（GH）3种类型。GH类型品种2年的平均食味值和产量分别为68.5和10.2 t·hm^-2，较MH和ML综合提高食味值6.8%、产量14.6%。从产量和品质性状的表现来看，与MH和ML相比，GH类型品种表现最高的结实率和口感得分。从生物量积累的过程来看，GH类型品种增加了灌浆初期的干物质积累比例，表现最高的抽穗-抽穗后15 d的干物质积累。进一步分析此阶段干物质积累成因发现，GH类型品种在稳定增加LAD的同时，显著增加了茎鞘中NSC的转运率。相关性分析表明，水稻结实率与口感得分、抽穗-抽穗后15 d的干物质积累和LAD及NSC转运率均呈极显著正相关关系。【结论】在保持较高的抽穗-抽穗后15 d LAD（100.4 m²·m^-2·d）的同时，进一步提高灌浆期茎鞘NSC的转运率（79.9%）促进灌浆启动，增加抽穗-抽穗后15 d干物质积累（3.6 t·hm^-2），提高水稻结实率（95.4%）和口感（9.6），是该区域味优高产协同水稻品种的共性特征。此外，研发以提高灌浆期NSC转运量和抽穗期植株茎鞘NSC积累为目标的水肥管理技术，有望进一步发挥上述味优高产协同品种的产量和食味品质潜力。

关键词: 长江下游地区, 粳稻, 味优高产, 结实率, 茎鞘非结构性碳水化合物转运

Abstract:

【Objective】In order to explore the common agronomic and physiological characteristics of good taste and high yield type japonica rice in the lower reaches of the Yangtze River, the study could provide theoretical basis and technical support for realizing synergistic improvement of rice yield and quality in this region. 【Method】The cultivar screening tests were conducted in 2018 and 2022 using 14 and 13 conventional japonica rice cultivars, respectively, to systematically compare the yield and composition, taste quality and textural characteristics, as well as agronomic and physiological indicators such as biomass, stem non-structural carbohydrates (NSC), and leaf area duration (LAD) among the different cultivars.【Result】The taste value and yield varied across the different cultivars, so through clustering by taste value and yield, they can be further divided into three types: medium taste and low yield (ML), medium taste and high yield (MH), good taste and high yield (GH). The average taste value and yield of GH in two years were 68.5 and 10.2 t·hm^-2, respectively, which were 6.8% higher in taste value and 14.6% higher in yield than MH and ML. In terms of performance for yield and quality traits, GH showed the highest grain filling percentage and taste scores compared to MH and ML. In terms of the dry matter accumulation, GH increased the proportion of dry matter accumulation at the early stage of grain filling stage, and showed the highest dry matter accumulation from heading stage to 15 days after heading stage. Further analysis of the causes of dry matter accumulation at this stage revealed that GH significantly increased the NSC remobilization rate while steadily increasing LAD. Correlation analyses showed highly significant positive correlations between grain filling percentage and taste, dry matter accumulation and LAD from heading stage to 15 days after heading stage, and NSC remobilization rate.【Conclusion】 While maintaining a high LAD from heading stage to 15 days after heading stage (100.4 m²·m^-2·d), further increasing NSC remobilization rate during grain filling stage (79.9%) to promote the initiation of grain filling, increasing the dry matter accumulation from heading stage to 15 days after heading stage (3.6 t·hm^-2), then improving the grain filling percentage (95.4%), and taste (9.6), which are the common characteristics of good taste and high yield type japonica rice in this region. In addition, the development of water and fertilizer management techniques targeting the enhancement of NSC remobilization at the grain filling stage and NSC accumulation at heading stage is expected to further exploit the yield and taste quality potential of the above good taste and high yield type japonica rice.

Key words: lower reaches of the Yangtze River, japonica rice, good taste and high yield, grain filling percentage, stem non-structural carbohydrates

朱天赐, 马天封, 柯健, 朱铁忠, 何海兵, 尤翠翠, 吴晨阳, 王冠军, 武立权. 长江下游地区味优高产协同粳稻的品种特性[J]. 中国农业科学, 2024, 57(4): 820-830.

ZHU TianCi, MA TianFeng, KE Jian, ZHU TieZhong, HE HaiBing, YOU CuiCui, WU ChenYang, WANG GuanJun, WU LiQuan. Characteristics of Good Taste and High Yield Type Japonica Rice in the Lower Reaches of the Yangtze River[J]. Scientia Agricultura Sinica, 2024, 57(4): 820-830.

0
/ / 推荐

导出引用管理器 EndNote|Reference Manager|ProCite|BibTeX|RefWorks

链接本文: https://www.chinaagrisci.com/CN/10.3864/j.issn.0578-1752.2024.04.015

https://www.chinaagrisci.com/CN/Y2024/V57/I4/820

图/表 12

图1

表1

表2

图2

图3

表3

表4

图4

表5

图5

图6

图7

参考文献 39

[1]	PENG S B, TANG Q Y, ZOU Y B. Current status and challenges of rice production in China. Plant Production Science, 2009, 12(1): 3-8. doi: 10.1626/pps.12.3
[2]	JIANG L L, WU L, WANG Y, XU Q, XU Z J, CHEN W F. Research progress on the divergence and genetic basis of agronomic traits in xian and geng rice. The Crop Journal, 2022, 10: 924-931. doi: 10.1016/j.cj.2022.02.006
[3]	张洪程, 张军, 龚金龙, 常勇, 李敏, 高辉, 戴其根, 霍中洋, 许轲, 魏海燕. “籼改粳”的生产优势及其形成机理. 中国农业科学, 2013, 46(4): 686-704. doi:10.3864/j.issn.0578-1752.2013.04.004.
	ZHANG H C, ZHANG J, GONG J L, CHANG Y, LI M, GAO H, DAI Q G, HUO Z Y, XU K, WEI H Y. The productive advantages and formation mechanisms of “indica rice to japonica rice”. Scientia Agricultura Sinica, 2013, 46(4): 686-704. doi:10.3864/j.issn.0578- 1752.2013.04.004. (in Chinese)
[4]	赵春芳, 岳红亮, 黄双杰, 周丽慧, 赵凌, 张亚东, 陈涛, 朱镇, 赵庆勇, 姚姝, 梁文化, 路凯, 王才林. 南粳系列水稻品种的食味品质与稻米理化特性. 中国农业科学, 2019, 52(5): 909-920. doi: 10.3864/j.issn.0578-1752.2019.05.012.
	ZHAO C F, YUE H L, HUANG S J, ZHOU L H, ZHAO L, ZHANG Y D, CHEN T, ZHU Z, ZHAO Q Y, YAO S, LIANG W H, LU K, WANG C L. Eating quality and physicochemical properties in Nanjing rice varieties. Scientia Agricultura Sinica, 2019, 52(5): 909-920. doi: 10.3864/j.issn.0578-1752.2019.05.012. (in Chinese)
[5]	ZHU Y, XU D, CHEN X Y, MA Z T, MA H Z, ZHANG M Y, LIU G D, WEI H Y, ZHANG H C. Quality characteristics of semi-glutinous japonica rice cultivated in the middle and lower reaches of the Yangtze River in China. Journal of the Science of Food and Agriculture, 2022, 102(9): 3712-3723. doi: 10.1002/jsfa.v102.9
[6]	WEI H H, MENG T Y, LI C, XU K, HUO Z Y, WEI H Y, GUO B W, ZHANG H C, DAI Q G. Comparisons of grain yield and nutrient accumulation and translocation in high-yielding japonica/indica hybrids, indica hybrids, and japonica conventional varieties. Field Crops Research, 2017, 204: 101-109. doi: 10.1016/j.fcr.2017.01.001
[7]	徐正进, 韩勇, 邵国军, 张学军, 全成哲, 潘国君, 闫平, 陈温福. 东北三省水稻品质性状比较研究. 中国水稻科学, 2010, 24(5): 531-534. doi: 10.3969/j.issn.1001-7216.2010.05.015
	XU Z J, HAN Y, SHAO G J, ZHANG X J, QUAN C Z, PAN G J, YAN P, CHEN W F. Comparison of rice quality characters in northeast region of China. Chinese Journal of Rice Science, 2010, 24(5): 531-534. (in Chinese)
[8]	陈培峰, 董明辉, 谢裕林, 朱勇良, 黄萌, 乔中英. 氮肥运筹对机插优质食味粳稻苏香粳100产量和品质的影响. 安徽农业科学, 2018, 46(35): 131-134, 179.
	CHEN P F, DONG M H, XIE Y L, ZHU Y L, HUANG M, QIAO Z Y. Effects of nitrogen management on yield and quality of high quality japonica rice Suxiangjing 100. Journal of Anhui Agricultural Sciences, 2018, 46(35): 131-134, 179. (in Chinese)
[9]	张卫星, 马晨怡, 袁玉伟, 张伟贵, 胡贤巧, 陈铭学, 朱智伟. 我国水稻三大优势产区稻米品质现状及区域差异. 中国稻米, 2021, 27(5): 12-18. doi: 10.3969/j.issn.1006-8082.2021.05.003
	ZHANG W X, MA C Y, YUAN Y W, ZHANG W G, HU X Q, CHEN M X, ZHU Z W. Current situation and regional difference of rice grain quality in three rice-production superiority areas of China. China Rice, 2021, 27(5): 12-18. (in Chinese) doi: 10.3969/j.issn.1006-8082.2021.05.003
[10]	张庆, 胡雅杰, 郭保卫, 张洪程, 徐玉峰, 徐晓杰, 朱邦辉, 徐洁芬, 钮中一, 凃荣文. 氮素穗肥施用时期对软米粳稻产量和品质的影响. 扬州大学学报(农业与生命科学版), 2021, 42(5): 72-77.
	ZHANG Q, HU Y J, GUO B W, ZHANG H C, XU Y F, XU X J, ZHU B H, XU J F, NIU Z Y, TU R W. Effect of ear nitrogen fertilizer application periods on yield and quality of soft japonica rice. Journal of Yangzhou University (Agricultural and Life Science Edition), 2021, 42(5): 72-77. (in Chinese)
[11]	朱大伟, 王力, 郭保卫, 张洪程, 戴其根, 霍中洋, 许轲, 魏海燕. 氮肥运筹对钵苗机插水稻干物质积累和产量及各器官氮素积累的影响. 江苏农业科学, 2015, 43(3): 46-49.
	ZHU D W, WANG L, GUO B W, ZHANG H C, DAI Q G, HUO Z Y, XU K, WEI H Y. Effects of nitrogen application on dry matter accumulation, yield and nitrogen accumulation in various organs of rice transplanted by pot seedling machine. Jiangsu Agricultural Sciences, 2015, 43(3): 46-49. (in Chinese)
[12]	马会珍, 陈心怡, 王志杰, 朱盈, 蒋伟勤, 任高磊, 马中涛, 魏海燕, 张洪程, 刘国栋. 中国部分优质粳稻外观及蒸煮食味品质特征比较. 中国农业科学, 2021, 54(7): 1338-1353. doi: 10.3864/j.issn. 0578-1752.2021.07.003.
	MA H Z, CHEN X Y, WANG Z J, ZHU Y, JIANG W Q, REN G L, MA Z T, WEI H Y, ZHANG H C, LIU G D. Analysis on appearance and cooking taste quality characteristics of some high quality japonica rice in China. Scientia Agricultura Sinica, 2021, 54(7): 1338-1353. doi: 10.3864/j.issn.0578-1752.2021.07.003. (in Chinese)
[13]	CHEN H, CHEN D, HE L H, WANG T, LU H, YANG F, DENG F, CHEN Y, TAO Y F, LI M, LI G Y, REN W J.Correlation of taste values with chemical compositions and Rapid Visco Analyser profiles of 36 indica rice (Oryza sativa L.) varieties. Food Chemistry, 2021, 349: 129176.
[14]	朱大伟, 章林平, 陈铭学, 方长云, 于永红, 郑小龙, 邵雅芳. 中国优质稻品种品质及食味感官评分值的特征. 中国农业科学, 2022, 55(7): 1271-1283. doi: 10.3864/j.issn.0578-1752.2022.07.002.
	ZHU D W, ZHANG L P, CHEN M X, FANG C Y, YU Y H, ZHENG X L, SHAO Y F. Characteristics of high-quality rice varieties and taste sensory evaluation values in China. Scientia Agricultura Sinica, 2022, 55(7): 1271-1283. doi: 10.3864/j.issn.0578-1752.2022.07.002. (in Chinese)
[15]	朱盈, 徐栋, 胡蕾, 花辰, 陈志峰, 张振振, 周年兵, 刘国栋, 张洪程, 魏海燕. 江淮优良食味高产中熟常规粳稻品种的特征. 作物学报, 2019, 45(4): 578-588. doi: 10.3724/SP.J.1006.2019.82040
	ZHU Y, XU D, HU L, HUA C, CHEN Z F, ZHANG Z Z, ZHOU N B, LIU G D, ZHANG H C, WEI H Y. Characteristics of medium- maturity conventional japonica rice with good taste and high yield in Jianghuai area. Acta Agronomica Sinica, 2019, 45(4): 578-588. (in Chinese) doi: 10.3724/SP.J.1006.2019.82040
[16]	JIANG Q, DU Y L, TIAN X Y, WANG Q S, XIONG R H, XU G C, YAN C A, DING Y F. Effect of panicle nitrogen on grain filling characteristics of high-yielding rice cultivars. European Journal of Agronomy, 2016, 74: 185-192. doi: 10.1016/j.eja.2015.11.006
[17]	YOSHIDA S, FORNO D, COCK J. Laboratory Manual for Physiological Studies of Rice. Manila Philippines: The International Rice Research Institute, 1976.
[18]	YANG S, ZHU Y, ZHANG R, LIU G D, WEI H Y, ZHANG H C, ZHANG H P. Mid-stage nitrogen application timing regulates yield formation, quality traits and 2-acetyl-1-pyrroline biosynthesis of fragrant rice. Field Crops Research, 2022, 287: 108667. doi: 10.1016/j.fcr.2022.108667
[19]	SHI S J, WANG E T, LI C X, CAI M L, CHENG B, CAO C G, JIANG Y. Use of protein content, amylose content, and RVA parameters to evaluate the taste quality of rice. Frontiers in Nutrition, 2022, 8: 758547. doi: 10.3389/fnut.2021.758547
[20]	卫平洋, 裘实, 唐健, 肖丹丹, 朱盈, 刘国栋, 邢志鹏, 胡雅杰, 郭保卫, 高尚勤, 魏海燕, 张洪程. 安徽沿淮地区优质高产常规粳稻品种筛选及特征特性. 作物学报, 2020, 46(4): 571-585. doi: 10.3724/SP.J.1006.2020.92044
	WEI P Y, QIU S, TANG J, XIAO D D, ZHU Y, LIU G D, XING Z P, HU Y J, GUO B W, GAO S Q, WEI H Y, ZHANG H C. Screening and characterization of high-quality and high-yield japonica rice varieties in Yanhuai region of Anhui Province. Acta Agronomica Sinica, 2020, 46(4): 571-585. (in Chinese) doi: 10.3724/SP.J.1006.2020.92044
[21]	GE J L, CHEN X, ZHANG X B, DAI Q G, WEI H H. Comparisons of rice taste and starch physicochemical properties in superior and inferior grains of rice with different taste value. Food Research International, 2023, 169: 112886. doi: 10.1016/j.foodres.2023.112886
[22]	唐益平, 李向峰, 王辉, 胡王琴, 任楚婷, 黄亚茹, 徐鹏, 尤翠翠, 柯健, 何海兵, 武立权. 茎鞘非结构性碳水化合物对大穗型粳稻强、弱势粒灌浆与品质的影响. 华北农学报, 2021, 36(5): 107-117. doi: 10.7668/hbnxb.20192227
	TANG Y P, LI X F, WANG H, HU W Q, REN C T, HUANG Y R, XU P, YOU C C, KE J, HE H B, WU L Q. Effect of non-structural carbohydrate in stem and sheath on grain filling and quality of superior and inferior spikelets in large-panicle japonica rice. Acta Agriculturae Boreali-Sinica, 2021, 36(5): 107-117. (in Chinese)
[23]	蒋晶晶, 周天阳, 韦陈华, 邬佳宁, 张耗, 刘立军, 王志琴, 顾骏飞, 杨建昌. 不同栽培措施对超级稻强、弱势粒品质的影响. 中国农业科学, 2022, 55(5): 874-889. doi: 10.3864/j.issn.0578-1752.2022.05. 004.
	JIANG J J, ZHOU T Y, WEI C H, WU J N, ZHANG H, LIU L J, WANG Z Q, GU J F, YANG J C. Effects of crop management practices on grain quality of superior and inferior spikelets of super rice. Scientia Agricultura Sinica, 2022, 55(5): 874-889. doi:10. 3864/j.issn.0578-1752.2022.05.004. (in Chinese)
[24]	DONG M H, SANG D Z, WANG P, WANG X M, YANG J C. Changes in cooking and nutrition qualities of grains at different positions in a rice panicle under different nitrogen levels. Rice Science, 2007, 14(2): 141-148. doi: 10.1016/S1672-6308(07)60020-1
[25]	HU Y X, LIN Y, XIA Y Q, XU X M, WANG Z T, CUI X R, HAN L, LI J Y, ZHANG R T, DING Y F, CHEN L. Overexpression of OsSnRK1a through a green tissue-specific promoter improves rice yield by accelerating sheath-to-panicle transport of nonstructural carbohydrates and increasing leaf photosynthesis. Plant Physiology and Biochemistry, 2023, 203: 108048. doi: 10.1016/j.plaphy.2023.108048
[26]	谢光辉, 杨建昌, 王志琴, 朱庆森. 水稻籽粒灌浆特性及其与籽粒生理活性的关系. 作物学报, 2001, 27(5): 557-565.
	XIE G H, YANG J C, WANG Z Q, ZHU Q S. Grain filling characteristics of rice and their relationships to physiological activities of grains. Acta Agronomica Sinica, 2001, 27(5): 557-565. (in Chinese)
[27]	杨建昌. 水稻弱势粒灌浆机理与调控途径. 作物学报, 2010, 36(12): 2011-2019. doi: 10.3724/SP.J.1006.2010.02011
	YANG J C. Mechanism and regulation in the filling of inferior spikelets of rice. Acta Agronomica Sinica, 2010, 36(12): 2011-2019. (in Chinese)
[28]	YOU C C, CHEN L, HE H B, WU L Q, WANG S H, DING Y F, MA C X. iTRAQ-based proteome profile analysis of superior and inferior Spikelets at early grain filling stage in japonica Rice. BMC Plant Biology, 2017, 17(1): 100. doi: 10.1186/s12870-017-1050-2
[29]	DENG F, WANG L, MEI X F, LI S X, PU S L, REN W J. Polyaspartate urea and nitrogen management affect nonstructural carbohydrates and yield of rice. Crop Science, 2016, 56(6): 3272-3285. doi: 10.2135/cropsci2016.02.0130
[30]	张国, 崔克辉. 水稻茎鞘非结构性碳水化合物积累与转运研究进展. 植物生理学报, 2020, 56(6): 1127-1136.
	ZHANG G, CUI K H. Research advances on accumulation and translocation of stem non-structural carbohydrates in rice. Plant Physiology Journal, 2020, 56(6): 1127-1136. (in Chinese)
[31]	JIANG Z R, CHEN Q L, CHEN L, LIU D, YANG H Y, XU C S, HONG J Z, LI J Q, DING Y F, SAKR S, LIU Z H, JIANG Y, LI G H. Sink strength promoting remobilization of non-structural carbohydrates by activating sugar signaling in rice stem during grain filling. International Journal of Molecular Sciences, 2022, 23(9): 4864. doi: 10.3390/ijms23094864
[32]	YOSHINAGA S, TAKAI T, ARAI-SANOH Y, ISHIMARU T, KONDO M. Varietal differences in sink production and grain-filling ability in recently developed high-yielding rice (Oryza sativa L.) varieties in Japan. Field Crops Research, 2013, 150: 74-82. doi: 10.1016/j.fcr.2013.06.004
[33]	PAN J F, CUI K H, WEI D, HUANG J L, XIANG J, NIE L X. Relationships of non-structural carbohydrates accumulation and translocation with yield formation in rice recombinant inbred lines under two nitrogen levels. Physiologia Plantarum, 2011, 141(4): 321-331. doi: 10.1111/ppl.2011.141.issue-4
[34]	ZHENG Y M, DING Y F, LIU Z H, WANG S H. Effects of panicle nitrogen fertilization on non-structural carbohydrate and grain filling in indica rice. Agricultural Sciences in China, 2010, 9(11): 1630-1640. doi: 10.1016/S1671-2927(09)60260-1
[35]	CHU G A, CHEN S, XU C M, WANG D Y, ZHANG X F. Agronomic and physiological performance of indica/japonica hybrid rice cultivar under low nitrogen conditions. Field Crops Research, 2019, 243: 107625. doi: 10.1016/j.fcr.2019.107625
[36]	ZHANG H, LI H W, YUAN L M, WANG Z Q, YANG J C, ZHANG J H. Post-anthesis alternate wetting and moderate soil drying enhances activities of key enzymes in sucrose-to-starch conversion in inferior spikelets of rice. Journal of Experimental Botany, 2012, 63(1): 215-227. doi: 10.1093/jxb/err263 pmid: 21926094
[37]	XU H F, WANG Z X, XIAO F, YANG L, LI G H, DING Y F, PAUL M J, LI W W, LIU Z H. Dynamics of dry matter accumulation in internodes indicates source and sink relations during grain-filling stage of japonica rice. Field Crops Research, 2021, 263: 108009. doi: 10.1016/j.fcr.2020.108009
[38]	FU J, HUANG Z H, WANG Z Q, YANG J C, ZHANG J H. Pre-anthesis non-structural carbohydrate reserve in the stem enhances the sink strength of inferior spikelets during grain filling of rice. Field Crops Research, 2011, 123(2): 170-182. doi: 10.1016/j.fcr.2011.05.015
[39]	LI G H, HU Q Q, SHI Y G, CUI K H, NIE L X, HUANG J L, PENG S B. Low nitrogen application enhances starch-metabolizing enzyme activity and improves accumulation and translocation of non- structural carbohydrates in rice stems. Frontiers in Plant Science, 2018, 9: 1128. doi: 10.3389/fpls.2018.01128

年份 Year	品种 Cultivar	播始历期 SS-HS (d)	生育天数 Growth duration (d)	年份 Year	品种 Cultivar	播始历期 SS-HS (d)	生育天数 Growth duration (d)
2018	苏香粳3号 SXJ3	87	147	2022	南粳3908 NJ3908	105	150
2018	南粳0212 NJ0212	86	149	2022	嘉119 J119	103	145
2018	武育粳3号 WYJ3	89	145	2022	鄂香2号 EX2	112	152
2018	南粳9108 NJ9108	85	149	2022	皖粳1608 WJ1608	117	164
2018	宁粳3号 NJ3	91	145	2022	德康粳1号 DKJ1	107	144
2018	武运粳31 WYJ31	91	146	2022	镇稻668 ZD668	106	144
2018	南粳52 NJ52	87	145	2022	镇稻28 ZD28	108	150
2018	宁粳8号 NJ8	89	151	2022	镇稻6080 ZD6080	109	149
2018	宁粳7号 NJ7	88	149	2022	泗稻301 SD301	103	140
2018	南粳5055 NJ5055	91	151	2022	镇稻18 ZD18	117	149
2018	武运粳23 WYJ23	91	149	2022	隆8351 L8351	105	152
2018	武粳14 WJ14	91	146	2022	镇稻9049 ZD9049	100	155
2018	宁粳1号 NJ1	91	145	2022	武育粳39 WYJ39	107	155
2018	淮稻5号 HD5	86	147

年份 Year	指标 Index	变幅大小 Variable amplitude	均值 Mean	标准差 Standard deviation	变异系数 CV (%)
2018	食味值 Taste value	62.8-68.9	65.5	2.1	3.2
2018	产量 Yield (t·hm^-2)	7.1-11.3	9.2	1.4	15.1
2022	食味值 Taste value	60.2-70.1	66.4	3.0	4.5
2022	产量 Yield (t·hm^-2)	7.3-11.4	9.8	1.4	14.4

品种类型 Type	有效穗数 Panicles (m^-2)	每穗粒数 Spikelets per panicle	总颖花量 Spikelets (×10³·m^-2)	结实率 Grain filling percentage (%)	千粒重 1000-grain weight (g)
味中低产 ML	364.0±15.1a	89.2±7.1b	32.4±1.6b	88.2±2.9c	26.5±2.1a
味中高产 MH	344.3±16.9a	119.2±0.5a	41.0±2.2a	91.8±0.6b	26.5±0.8a
味优高产 GH	365.9±14.2a	111.9±10.3a	41.0±4.3a	95.4±1.1a	27.1±1.3a

品种类型 Type	食味品质Eating quality		质构特性Texture characteristics
品种类型 Type	外观 Appearance	口感 Taste	硬度 Hardness	黏度 Viscosity	平衡度 Balance degree	弹性 Springing
味中低产 ML	8.91±0.08b	8.78±0.13c	6.36±0.91a	0.51±0.11a	0.08±0.02a	0.76±0.01a
味中高产 MH	9.33±0.09a	9.22±0.16b	6.03±1.34a	0.56±0.03a	0.10±0.03a	0.78±0.01a
味优高产 GH	9.58±0.21a	9.60±0.22a	5.93±0.59a	0.58±0.01a	0.10±0.01a	0.78±0.01a

品种类型 Type	移栽-抽穗期 TP-HS (t·hm^-2)	抽穗-抽穗后15 d HS-15DAH (t·hm^-2)	抽穗后15 d-成熟期 15DAH-MS (t·hm^-2)	移栽-成熟期 TP-MS (t·hm^-2)
味中低产 ML	10.0±0.2a	1.8±0.2b	2.8±0.6b	14.5±0.3b
味中高产 MH	9.0±0.3b	2.5±0.4b	4.6±0.3a	16.0±0.2a
味优高产 GH	8.7±0.3b	3.6±0.5a	3.1±0.6b	15.4±0.5a