Crops ›› 2022, Vol. 38 ›› Issue (3): 134-142.doi: 10.16035/j.issn.1001-7283.2022.03.019

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Dynamic Variation and Correlation of Pericarp Tenderness and Component Contents of Super Sweet Corn

Gu Yinshan1,3(), Zhang Shilong2,3, Jia Haitao3, Li Xiaoqin2, He Zhenghua3, Jiao Chunhai3, Tian Xiaohai1, Huang Yiqin3(), Wei Wenliang1()   

  1. 1College of Agriculture, Yangtze University, Jingzhou 434025, Hubei, China
    2South China Agricultural University/State Key Laboratory for Conservation and Utilization of Subtropical Agrobioresources, Guangzhou 510642, Guangdong, China
    3Institute of Food Crops, Hubei Academy of Agriculture Sciences/Hubei Key Laboratory of Germplasm Innovation and Genetic Improvement of Grain Crops, Wuhan 430064, Hubei, China
  • Received:2021-08-28 Revised:2021-11-10 Online:2022-06-15 Published:2022-06-20
  • Contact: Huang Yiqin,Wei Wenliang E-mail:1280443809@qq.com;whwenliang@163.com;hyqhzau@163.com

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Abstract:

Ten inbred lines of super sweet corn with similar growth time and gradient difference in pericarp tenderness were used to study the dynamic change of pericarp tenderness and main constituents and their interrelationship in kernel development in order to understand the influence of the content variation of the main ingredients on pulp tenderness. The results showed that PE10 (best tenderness), T105 (medial tenderness), and S33205 (worst tenderness) of the 10 materials exhibited a curvilinear increase in pericarp tenderness score (puncture reading) from 12 to 24d after pollination in Spring (Wuhan, Hubei) and Winter (Lingshui, Hainan) in 2014. In addition, the mean values of the pericarp tenderness scores at each time point showed the same descending order of S33205, T105 and PE10. The change rate of pericarp tenderness was affected by the environment. The variation in hemicellulose content in the pericarp of three inbred lines showed the gradual increase from small to large during the test, the lignin content varied along a single peak curve, the cellulose content varied by 24% throughout, and the pectin and ash contents changed little and irregular. The average levels of the major constituents of the pericarp were all in descending order of hemicellulose, cellulose, lignin over the test period. Either in the course of grain development or at the most appropriate time of harvest, the levels of hemicellulose and lignin all correlated significantly with pericarp tenderness, which were chemical factors affecting pericarp tenderness.

Key words: Super sweet corn, Pericarp tenderness, Component content, Dynamic variation, Correlation

Table 1

Analysis of variance on pericarp tenderness"

变异来源
Source of variance		 df SS MS F F0.05 F0.01
材料间
Between materials		 9 16784.05 1864.89 416.81** 2.12 2.89
环境间
Between environments		 1 2.38 2.38 0.53 4.08 7.31
材料×环境
Material × environment		 9 26.34 2.93 0.65 2.12 2.89
误差Error 40 178.97 4.47
总变异Total variance 59 16991.74

Table 2

Multiple comparison between average pericarp tenderness of ten super sweet corninbred lines on the optimum picking time"

材料Material 果皮柔嫩度Pericarp tenderness (g/mm2)
S33205 158.03±0.71aA
S33247 152.31±1.59bB
HZ508 137.99±2.46cC
S13084 137.20±1.71cdC
S23207 134.91±2.88deDC
T105 132.45±0.86eD
S33222 128.55±2.07fE
S23288 123.92±3.12gF
S13237 107.05±2.01hG
PE10 101.33±1.56iH

Fig.1

Dynamic variation of pericarp tenderness of PE10, T105 and S33205 under two environments"

Fig.2

Comparison among variations of pericarp tenderness of PE10(a), T105(b) and S33205(c) under two environments"

Fig.3

Dynamic variation pericarp component contents of PE10"

Fig.4

Dynamic variation pericarp component contents of T105"

Fig.5

Dynamic variation pericarp component contents of S33205"

Table 3

Comparison of the content changes of pericarp components under different environmental conditions %"

材料
Material		 果皮成分
Pericarp component		 环境
Environment		 主要成分含量Component content
12d 14d 16d 18d 20d 22d 24d
PE10 纤维素 S 23.82±0.38a 24.43±0.59a 25.59±0.84a 25.23±0.82a 26.40±1.23a 24.53±1.37a 23.37±2.25a
W 24.38±1.24a 25.92±0.65a 23.84±1.01a 23.62±0.83a 24.53±1.45a 25.48±1.13a 25.25±1.00a
半纤维素 S 20.16±0.95a 22.86±0.88a 37.78±1.06aA 40.45±1.95aA 43.21±1.05a 45.64±0.82aA 47.35±1.38a
W 17.35±1.00a 19.34±0.91a 32.16±1.85bB 35.18±1.42bB 38.94±0.69b 40.11±1.16bB 45.28±1.11a
果胶 S 1.18±1.14a 3.49±0.65a 2.49±0.59a 2.14±0.30a 2.48±0.50a 1.72±0.82a 2.19±0.43a
W 3.23±0.80a 2.89±1.03a 1.28±0.75a 2.13±0.98a 3.65±0.79a 2.73±0.95a 2.98±1.12a
木质素 S 6.03±0.53a 6.91±0.53a 6.95±0.55a 8.40±0.97aA 10.85±0.60aA 8.14±0.97a 8.15±0.77a
W 4.82±0.65a 5.09±0.98a 5.35±1.66a 5.42±0.53bB 8.45±1.22bB 8.37±0.80a 7.04±1.28a
灰分 S 1.09±0.31a 2.20±0.28a 1.83±0.64a 2.00±0.38a 1.96±0.40a 2.03±0.18a 1.14±0.34a
W 1.55±0.46a 1.13±0.26a 1.60±1.11a 1.57±0.40a 1.43±0.51a 1.64±0.61a 1.47±0.50a
T105 纤维素 S 23.38±1.10a 23.15±0.98a 24.17±1.12a 23.31±1.88a 23.08±1.26a 24.43±1.53a 23.65±1.35a
W 23.84±0.89a 24.71±1.79a 23.77±1.53a 22.86±1.96a 24.62±1.16a 25.02±2.31a 24.06±1.18a
半纤维素 S 37.97±1.29a 40.61±1.63a 46.02±1.03a 48.83±1.64aA 52.05±1.50aA 51.20±1.05a 53.78±0.88a
W 36.54±1.42a 37.85±1.65a 42.61±0.83b 43.68±1.42bB 46.27±1.38bB 48.59±0.57b 49.17±1.10a
果胶 S 2.06±0.35a 2.05±0.10a 1.84±0.37a 1.95±0.27a 2.40±0.46a 1.83±0.33a 2.01±0.30a
W 1.88±0.63a 1.94±0.80a 2.45±0.76a 2.01±0.87a 1.02±0.36a 1.71±0.44a 2.52±0.43a
木质素 S 7.56±0.74a 8.08±0.55a 8.18±0.45a 10.81±0.95aA 10.99±0.57a 10.32±0.66a 10.43±1.01a
W 6.92±0.69a 7.02±0.96a 7.24±1.03a 8.51±1.10bB 9.63±1.67b 10.71±1.05a 9.43±0.90a
灰分 S 1.96±0.41a 2.05±0.29a 1.91±0.24a 2.09±0.26a 1.63±0.34a 2.10±0.21a 2.26±0.35a
W 1.85±0.59a 1.97±0.56a 1.80±0.71a 1.79±0.55a 1.85±0.49a 2.07±0.30a 1.89±0.44a
S33205 纤维素 S 24.10±1.48a 24.57±1.24a 25.06±0.89a 24.66±0.63a 25.37±0.85a 23.78±0.81a 24.56±0.66a
W 23.48±1.04a 24.38±0.62a 25.06±1.14a 24.66±1.97a 25.37±1.62a 23.78±1.18a 24.56±1.28a
半纤维素 S 39.22±1.06a 41.91±0.92a 43.68±1.10a 45.80±1.00a 48.26±1.08a 51.67±1.10a 52.33±1.53a
W 38.62±1.22a 38.71±0.77b 43.01±0.36a 44.88±0.95a 47.77±1.29a 50.04±1.37a 51.68±1.52a
果胶 S 3.12±0.68a 3.50±0.60a 3.55±0.42a 4.35±0.57a 3.01±0.80a 3.60±0.43a 3.04±0.38a
W 3.15±1.07a 2.09±0.97b 3.04±0.36a 3.56±0.91a 2.05±0.47a 3.02±1.24a 3.45±0.53a
木质素 S 9.06±0.44a 9.28±0.60a 9.48±0.50a 11.99±1.01aA 11.79±0.71a 10.52±0.48a 10.33±0.52a
W 8.27±1.06a 9.02±1.40a 9.25±1.27a 9.77±1.83bB 11.58±1.32a 11.82±0.73a 9.83±1.31a
灰分 S 1.88±0.43a 2.08±0.34a 2.46±0.43a 2.72±0.43a 2.97±0.36a 2.92±0.33a 2.88±0.22a
W 2.71±0.43a 1.94±0.31a 2.35±0.50a 2.66±0.25a 2.87±0.51a 2.43±0.54a 2.66±0.40a

Table 4

Correlation coefficients between pericarp component and pericarp tenderness over time within each inbred in two environments"

果皮成分
Pericarp component		 果皮柔嫩度Pericarp tenderness
PE10 T105 S33205
2014年春季
Spring in 2014		 2014年冬季
Winter in 2014		 2014年春季
Spring in 2014		 2014年冬季
Winter in 2014		 2014年春季
Spring in 2014		 2014年冬季
Winter in 2014
纤维素Cellulose 0.08 0.24 0.22 0.20 0.15 0.22
半纤维素Hemicellulose 0.96** 0.94** 0.91** 0.87** 0.98** 0.97**
果胶Pectin -0.09 0.15 0.16 0.15 -0.21 0.22
木质素Lignin 0.71** 0.74** 0.72** 0.75** 0.72** 0.77**
灰分Ash 0.04 0.23 0.16 0.20 0.23 0.22

Table 5

Correlation coefficients between pericarp tenderness and pericarp component at the optimum picking time of different materials"

果皮成分
Pericarp component		 果皮柔嫩度Pericarp tenderness
2014年春季
Spring 2014		 2014年秋季
Winter 2014
纤维素Cellulose 0.13 0.09
半纤维素Hemicellulose 0.92** 0.90**
果胶Pectin 0.04 0.12
木质素Lignin 0.70** 0.72**
灰分Ash 0.11 0.20
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