Nine Different Usage Types of Cassava Lines: Adaptability Study in Hepu

doi:10.11924/j.issn.1000-6850.casb2023-0593

Abstract

Abstract:

In order to select suitable cassava lines for extending in Hepu, the biological characteristics of 9 cassava lines were observed with the main cultivar variety ‘Nanzhi 199’ as control, and their agronomic and economic characters were determined and the correlation analysis were conducted. The results showed that the branch angles of 9 cassava lines were small, the root lengths were moderate and the main stem heights were above medium. The tuber yield of ‘RC4’ was significantly higher than the control, but other 8 cassava lines had no significant difference. The starch yields of 8 cassava lines such as ‘RC4’ were higher than that of the control. The starch contents of 9 cassava lines were higher than that of the control, among which 5 cassava lines such as ‘RC3’ were significantly or extremely significantly higher than that of the control. The amylose contents of 9 cassava lines were significant or extremely significantly lower than that of the control. The hydrocyanic acid contents of 6 cassava lines such as ‘RC6’ were lower than 50 mg/kg. The results of correlation analysis showed that the tuber yield was extremely significantly positive related to plant height at middle growth stage, plant height at maturity stage and diameter of tuber root, and was significantly positive related to stem diameter. Starch content was significantly positive related to plant height at middle growth stage, plant height at maturity stage and stem diameter. Starch yield was extremely significantly positive related to plant height at middle growth stage, plant height at maturity stage, stem diameter, tuber diameter, tuber yield, and was significantly positive related to starch content. In conclusion, the 9 new cassava lines had good comprehensive characters and were suitable for extending in Hepu. ‘RC3’, ‘RC4’ and ‘RC7’ can be used for further processing. ‘RC5’ and ‘RC10’ can be used for fresh consumption. ‘RC2’, ‘RC6’, ‘RC11’ and ‘RC12’ can be used for both fresh consumption and further processing. ‘RC2’ and ‘RC5’ have great prospects for popularization as edible lines.

Key words: cassava, lines, adaptability, usage types, correlation analysis, Hepu County, biological characteristics, agronomical traits, economic traits, tuber yield, starch content, amylose content, hydrocyanic acid content, processing cultivars, edible cultivars, fresh and processing dual-purpose cultivars, prospects for promotion

LUO Yanchun, ZHAO Xinxin, PAN Huan, LIAO Qi, YU Benchi, LAO Shangye, PHAM Thinhan, LIU Cuijuan, LI Rongyun, ZENG Xinhua, FU Haitian. Nine Different Usage Types of Cassava Lines: Adaptability Study in Hepu[J]. Chinese Agricultural Science Bulletin, 2024, 40(18): 31-37.

Figures/Tables 4

References 34

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品系	块根外皮颜色	块根内皮颜色	块根肉质颜色	分枝角度	茎的分叉	成熟种茎外皮颜色	成熟种茎内皮颜色
RC2	红褐	白	黄	无分枝	无分叉	褐	绿
RC3	白	浅红	白	15°	二分叉	灰白	浅绿
RC4	黄	黄	白	无分枝	无分叉	灰黄	浅绿
RC5	红褐	黄	乳黄	无分枝	无分叉	红褐	浅绿
RC6	红褐	白	白	20°	三分叉	褐	绿
RC7	白	白	白	无分枝	无分叉	灰绿		绿
RC10	红褐	黄	白	17°	二分叉	灰绿		绿
RC11	黄褐	白	白	24°	三分叉	黄褐		浅绿
RC12	白	黄	白	17°	三分叉	灰黄		浅绿
南植199（CK）	红褐	白	白	无分枝	无分叉	红褐		绿

品系	块根外皮颜色	块根内皮颜色	块根肉质颜色	分枝角度	茎的分叉	成熟种茎外皮颜色	成熟种茎内皮颜色
RC2	红褐	白	黄	无分枝	无分叉	褐	绿
RC3	白	浅红	白	15°	二分叉	灰白	浅绿
RC4	黄	黄	白	无分枝	无分叉	灰黄	浅绿
RC5	红褐	黄	乳黄	无分枝	无分叉	红褐	浅绿
RC6	红褐	白	白	20°	三分叉	褐	绿
RC7	白	白	白	无分枝	无分叉	灰绿		绿
RC10	红褐	黄	白	17°	二分叉	灰绿		绿
RC11	黄褐	白	白	24°	三分叉	黄褐		浅绿
RC12	白	黄	白	17°	三分叉	灰黄		浅绿
南植199（CK）	红褐	白	白	无分枝	无分叉	红褐		绿

品系	生长中期株高/cm	成熟期株高/cm	主茎高度/cm	茎粗/mm	块根直径/mm	块根数/条	块根长/cm
RC2	232±8ab	261±9a	260±9aA	27.78±1.55ab	46.15±0.43abcAB	11.5±0.7a	26.9±2.1c
RC3	171±43ab	254±30ab	172±43bcABC	28.44±2.39ab	51.18±1.45aA	9.3±1.9abc	26.6±2.1c
RC4	168±26ab	228±12ab	225±13abAB	26.39±1.10ab	47.77±1.87abAB	9.7±0.5abc	30.6±2.2abc
RC5	137±27b	190±24b	186±28bcAB	21.98±2.45b	42.08±1.20bcB	8.7±1.0abc	28.7±1.0abc
RC6	237±12a	254±7ab	214±15abcAB	28.56±1.94ab	42.93±1.54bcB	9.3±0.5abc	28.1±1.1bc
RC7	159±27ab	213±29ab	177±12bcABC	25.81±3.48ab	47.24±3.50abAB	8.0±1.8bc	32.4±1.7abc
RC10	179±46ab	237±27ab	151±6cBC	26.74±2.35ab	45.42±2.04bcAB	9.2±0.8abc	27.6±1.2bc
RC11	181±32ab	225±12ab	82±5dC	26.24±1.09ab	42.41±2.33bcB	8.1±0.7bc	32.8±0.7ab
RC12	200±30ab	253±11ab	218±35abcAB	27.01±2.34ab	47.58±1.65abAB	7.2±0.7c	33.9±1.1a
南植199(CK)	158±13ab	188±9b	174±10bcABC	23.29±1.44b	45.14±0.72bcAB	9.6±1.2abc	30.5±3.4abc

品系	生长中期株高/cm	成熟期株高/cm	主茎高度/cm	茎粗/mm	块根直径/mm	块根数/条	块根长/cm
RC2	232±8ab	261±9a	260±9aA	27.78±1.55ab	46.15±0.43abcAB	11.5±0.7a	26.9±2.1c
RC3	171±43ab	254±30ab	172±43bcABC	28.44±2.39ab	51.18±1.45aA	9.3±1.9abc	26.6±2.1c
RC4	168±26ab	228±12ab	225±13abAB	26.39±1.10ab	47.77±1.87abAB	9.7±0.5abc	30.6±2.2abc
RC5	137±27b	190±24b	186±28bcAB	21.98±2.45b	42.08±1.20bcB	8.7±1.0abc	28.7±1.0abc
RC6	237±12a	254±7ab	214±15abcAB	28.56±1.94ab	42.93±1.54bcB	9.3±0.5abc	28.1±1.1bc
RC7	159±27ab	213±29ab	177±12bcABC	25.81±3.48ab	47.24±3.50abAB	8.0±1.8bc	32.4±1.7abc
RC10	179±46ab	237±27ab	151±6cBC	26.74±2.35ab	45.42±2.04bcAB	9.2±0.8abc	27.6±1.2bc
RC11	181±32ab	225±12ab	82±5dC	26.24±1.09ab	42.41±2.33bcB	8.1±0.7bc	32.8±0.7ab
RC12	200±30ab	253±11ab	218±35abcAB	27.01±2.34ab	47.58±1.65abAB	7.2±0.7c	33.9±1.1a
南植199(CK)	158±13ab	188±9b	174±10bcABC	23.29±1.44b	45.14±0.72bcAB	9.6±1.2abc	30.5±3.4abc

品系	块根产量/ (kg/hm²)	块根增产率/%	淀粉含量/%	淀粉增加百分点	淀粉产量/ (kg/hm²)	淀粉增产率/%	直链淀粉含量/%	氢氰酸含量/(mg/kg)	β-胡萝卜素含量/(μg/100g)
RC2	46875±2823abAB	22.5	27.7±0.8bcBCDE	1.8	12922±380a	30.1	12.3±0.2bcB	16.0±0.4hG	246.4±5.5aA
RC3	43843±4167abcAB	14.6	31.0±0.8aA	5.1	13653±1610a	37.5	13.2±0.2bAB	64.5±1.3cC	18.5±0.3eE
RC4	51814±960aA	35.4	26.5±0.7cDE	0.6	13724±578a	38.2	12.3±0.7bcB	78.5±1.6bB	19.6±0.4eDE
RC5	33513±4728cB	-12.4	30.4±0.8aABC	4.5	10262±1736a	3.3	11.7±0.6cB	20.3±0.4gF	136.4±2.0bB
RC6	43702±2882abcAB	14.2	30.7±0.6aAB	4.8	13412±784a	35.1	12.7±0.2bcB	14.7±0.3hG	18.1±0.4eE
RC7	47746±1501abAB	24.8	27.5±0.7bcBCDE	1.6	13163±699a	32.6	13.2±0.1bAB	118.0±0.9aA	27.3±0.4dD
RC10	35722±4757bcAB	-6.6	27.4±0.9bcCDE	1.5	9882±1606a	-0.5	13.0±0.2bcAB	23.6±0.8fF	22.1±0.4deDE
RC11	45768±6116abcAB	19.6	29.6±0.4abABCD	3.7	13612±1990a	37.1	13.5±0.6bAB	22.0±0.2fgF	10.0±0.2fF
RC12	45408±5486abcAB	18.7	29.1±0.7abABCDE	3.2	13276±1820a	33.7	13.1±0.2bAB	41.8±0.2dD	1.6±0.1gG
南植199(CK)	38254±2048bcAB	/	25.9±0.8cE	/	9928±683a	/	14.9±0.5aA	32.6±0.7eE	80.7±1.6cC