Selection and evaluation of water-saving and drought-resistant rice adaptability in newly (reclaimed) cultivated land in mountainous and hilly areas

doi:10.16178/j.issn.0528-9017.20250392

Abstract

Abstract:

To screen high-yield rice varieties suitable for cultivation in newly (reclaimed) hilly and mountainous farmland in Ningbo, nine water-saving and drought-resistant rice (WDR) varieties were evaluated. Correlation analysis, cluster analysis, and principal component analysis were used to comprehensively assess the correlation and differences in yield components and rice quality indicators among the varieties. The results showed that yield, head rice rate, chalkiness and gel consistency had high coefficients of variation, making them important factors for evaluating the comprehensive performance of WDR. Correlation analysis indicated a significant positive correlation between milled rice rate and seed-setting rate, while a highly significant negative correlation was observed between length-to-width ratio and both chalkiness and amylose content. It was suggested that improving the seed-setting rate enhanced rice processing quality, while increasing the length-to-width ratio improved appearance and cooking quality. Cluster analysis categorized the nine WDR varieties into four groups. Group Ⅳ, comprising three varieties, including Hanyou 737, Hanyou 73, and Hanyou 786, exhibited high yield, superior milling quality, and improved appearance quality. Based on principal component analysis composite scores, the top three varieties were Hanyou 786, Hanyou 737, and Hanyou 73, which were recommended for cultivation in newly (reclaimed) hilly areas of Ningbo.

Key words: water-saving and drought-resistant rice (WDR), yield, rice quality, cluster analysis, principal component analysis

CLC Number:

S511

HU Tiejun, ZHOU Fei, JIN Shuquan, WANG Feng, CHEN Yutiao. Selection and evaluation of water-saving and drought-resistant rice adaptability in newly (reclaimed) cultivated land in mountainous and hilly areas[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(9): 2084-2089.

Figures/Tables 9

References 12

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编号	品种	来源
1	旱优786	上海天谷生物科技股份有限公司
2	旱优116	上海天谷生物科技股份有限公司
3	旱优127	上海天谷生物科技股份有限公司
4	旱优737	上海市农业生物基因中心
5	旱优73	上海市农业生物基因中心
6	旱优540	上海市农业生物基因中心
7	旱优3015	上海市农业生物基因中心
8	旱优708	安徽荃银超大种业有限公司
9	绿旱两优21	安徽昊邦农业科技有限公司

编号	品种	来源
1	旱优786	上海天谷生物科技股份有限公司
2	旱优116	上海天谷生物科技股份有限公司
3	旱优127	上海天谷生物科技股份有限公司
4	旱优737	上海市农业生物基因中心
5	旱优73	上海市农业生物基因中心
6	旱优540	上海市农业生物基因中心
7	旱优3015	上海市农业生物基因中心
8	旱优708	安徽荃银超大种业有限公司
9	绿旱两优21	安徽昊邦农业科技有限公司

品种	有效穗数/(万·hm^-2)	每穗实粒数	结实率/%	千粒重/g	产量/(kg·hm^-2)
旱优786	225.36±4.03 bc	181.37±7.14 a	82.13±1.66 bcd	26.12±0.80 ab	8 413.67±67.83 a
旱优116	208.64±8.02 de	162.32±3.11 bc	81.37±3.24 cd	24.16±1.15 bcd	7 429.45±248.70 c
旱优127	189.71±1.67 g	147.29±5.59 de	79.12±2.44 d	22.85±1.46 d	5 863.96±151.58 e
旱优737	237.15±2.55 a	175.69±5.23 a	87.16±1.49 a	25.21±1.19 bc	8 174.54±417.14 a
旱优73	203.78±7.83 ef	178.63±10.15 a	85.49±2.62 abc	27.29±0.90 a	7 958.26±228.58 ab
旱优540	217.79±5.66 cd	168.56±10.81ab	81.29±3.23 cd	23.76±0.41 cd	6 863.07±364.67 d
旱优3015	231.48±4.89 ab	152.43±3.79 cd	84.26±2.09 abc	24.87±0.66 bc	7 642.78±234.35 bc
旱优708	211.07±2.76 de	137.68±5.35 e	82.74±3.61 abcd	24.45±1.62 bcd	6 778.21±252.99 d
绿旱两优21	197.41±5.13 fg	142.67±7.96 de	86.27±1.04 ab	24.06±0.46 cd	6 117.58±227.86 e
平均值	212.60	160.74	83.31	24.75	7 249.06
标准差	16.19	15.41	2.80	1.31	840.66
变异系数/%	7.63	9.74	3.35	5.32	11.83

品种	有效穗数/(万·hm^-2)	每穗实粒数	结实率/%	千粒重/g	产量/(kg·hm^-2)
旱优786	225.36±4.03 bc	181.37±7.14 a	82.13±1.66 bcd	26.12±0.80 ab	8 413.67±67.83 a
旱优116	208.64±8.02 de	162.32±3.11 bc	81.37±3.24 cd	24.16±1.15 bcd	7 429.45±248.70 c
旱优127	189.71±1.67 g	147.29±5.59 de	79.12±2.44 d	22.85±1.46 d	5 863.96±151.58 e
旱优737	237.15±2.55 a	175.69±5.23 a	87.16±1.49 a	25.21±1.19 bc	8 174.54±417.14 a
旱优73	203.78±7.83 ef	178.63±10.15 a	85.49±2.62 abc	27.29±0.90 a	7 958.26±228.58 ab
旱优540	217.79±5.66 cd	168.56±10.81ab	81.29±3.23 cd	23.76±0.41 cd	6 863.07±364.67 d
旱优3015	231.48±4.89 ab	152.43±3.79 cd	84.26±2.09 abc	24.87±0.66 bc	7 642.78±234.35 bc
旱优708	211.07±2.76 de	137.68±5.35 e	82.74±3.61 abcd	24.45±1.62 bcd	6 778.21±252.99 d
绿旱两优21	197.41±5.13 fg	142.67±7.96 de	86.27±1.04 ab	24.06±0.46 cd	6 117.58±227.86 e
平均值	212.60	160.74	83.31	24.75	7 249.06
标准差	16.19	15.41	2.80	1.31	840.66
变异系数/%	7.63	9.74	3.35	5.32	11.83

自变量	非标准化系数	标准误	t值	P值	VIF	R²	Pe
常量	-6 020.150	3 117.670	-1.931	0.126		0.952	0.219
有效穗数	28.979	7.599	3.813	0.019	1.487
每穗实粒数	11.977	9.308	1.287	0.268	2.401
结实率	-50.752	49.124	-1.033	0.360	1.760
千粒重	379.052	122.551	3.093	0.036	2.732