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Study on Difference of Dynamic Compensation Effect of Individual to Population for Double Season Rice Hybrid Cultivars with Different Yield Stability Characteristic

Author: XiaoZiJing
Tutor: ChenXiaoRong
School: Jiangxi Agricultural University,
Course: Genetics
Keywords: Double-crop rice Yield stability Dynamic growth of the compensation effect Physiological characteristics
CLC: S511.42
Type: Master's thesis
Year: 2011
Downloads: 21
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Abstract

The trials to select different yield stable double-crop rice hybrids 2 rice Ganxin 203 Ganxin 206 and late five Fengyou Models T025, Changyou 10 study compared the early growth stage of all varieties density thinning (dynamic) Individual compensation effects on the group's growth. The main indicators are as follows: yields and components of the plant type indicators, dry matter weight, leaf area index, specific leaf weight, bleeding intensity, chlorophyll SPAD value, functional leaves endogenous gibberellin (GA), zeatin riboside ( ZR), indole acetic acid (IAA), abscisic acid (ABA) content, harvest index. Compare varieties under four different inter-stump treatment conditions yield stability, to explore the relationship between the of growth compensation effect of yield stability, the main results are as follows: the yield per unit area: all varieties with the density thinning treatment The yield per unit area presents a downward trend, large range of Ganxin 206 Changyou 10 drop. The coefficient of variation of the of Ganxin 203 and Ganxin 206, respectively: 3.60%, 7.62%, very poor rates were: 32.52%, 53.98%; the Ng Fung the excellent T025 and Changyou 10 coefficients of variation were: 2.93%, 5.61% , very poor rates were as follows: 37.36%, 49.25%. The Xin 206 and Changyou 10 stable Ganxin 203 and five Fengyou T025, the yield per unit area than the density thinning processing conditions Gan. Yield per plant: varieties with the density thinning treatment yield per plant presented an upward trend Ganxin 203 and Ng Fung the excellent T025 rise of magnitude. The coefficient of variation of the of Ganxin 203 and Ganxin 206, respectively: 4.90%, 9.71%, very poor rate: 113.89%, 70.76%; the Ng Fung the excellent T025 and Changyou 10 coefficients of variation were: 3.38%, 6.03% , range were: 92.53%, 72.17%. Individual yield per plant showed that of Ganxin 203 and five Fengyou T025 is greater than the compensation effect of the groups Ganxin 206 Changyou 10. Yield components: of Ganxin 203 of coefficient of variation: 2.83% of the number of grains per panicle, grain weight 2.59%, seed setting rate: 1.04% 4.29% plant spike of 3.75% per acre effective ear. Ganxin 206 coefficient of variation: 1.44% of the number of grains per panicle, grain weight 2.06%, seed setting rate: 2.34%, effective monoclonal spike 4.32%, 5.03% effective panicles per acre. Ganxin 203 poor rate: the number of grains per panicle very poor rate of 7.36%; the grain weight very poor rate of 3.76%; the monoclonal effective panicles poor rate of 104.12 percent; seed rate is very poor rate of 10.02%; per acre effective panicles pole slip 47.07%. Ganxin 206 poor rate: the number of grains per panicle very poor rate of 6.14%; the grain weight very poor rate of 4.32%; the monoclonal effective panicles poor rate of 74.42%; seed setting rate of the poor rate of 5.11%; per acre effective panicles pole slip 85.76%. Five Fengyou T025 coefficient of variation: the number of grains per panicle: 4.09%, seed setting rate of 1.91%, grain weight 1.18% 7.46% per acre spike, effective monoclonal spike 7.39%. Changyou coefficient of variation: the number of grains per panicle: 5.31%, strong rate of 4.10%, grain weight 1.94% 9.31% per acre spike 10.39%, effective panicles per plant. The poor rate of five Fengyou T025: the number of grains per panicle very poor rate of 23.49%; the grain weight very poor rate of 5.92%; the monoclonal effective panicles poor rate of 38.38%; poor rate of seed setting rate of 8.67%; per acre effective panicle number very poor rate of 116.71 percent. Changyou 10 poor rate: the number of grains per panicle very poor rate of 17.76%; the grain weight very poor rate of 4.20%; the monoclonal effective panicles poor rate of 34.30%; seed rate is very poor rate of 12.00%; per acre effective panicles pole slip 123.28%. That Ganxin 203 grains per panicle, effective panicle, seed setting rate between the structure of compensation effect is greater than the Ganxin 206 grains per panicle; the five Feng excellent T025 effective panicles, grain weight between the structure of compensation effect greater than Changyou 10. Plant type: As the density thinning processing varieties cob angle, leaf length, leaf width presents a rising trend, leaf angle presents a downward trend, Ganxin 203 and Ng Fung the excellent T025 cob angle rise decline in the Ganxin 206 and Changyou 10, of Ganxin 203 and five Fengyou T025 leaf angle greater than Ganxin 206 and Changyou 10, of Ganxin 203 and five Fengyou T025 leaf width and leaf length increase is greater than of Ganxin 206 and Chang excellent 10. The early rice varieties Ganxin 203 and late rice varieties Ng Fung excellent T025 dry matter weight control and processing unit area decreased in each period than kam the Xin 206 and Changyou 10 small, dry matter weight, single stem substance weight, leaf area index, bleeding intensity, chlorophyll SPAD value, the number of primary branches, the rise of the secondary branch. Show that the density thinning treatment of Ganxin 203 and five Fengyou T025 weight per unit area of ??dry matter than Ganxin 206 and Changyou 10 stable; of Ganxin 203 grains per panicle, effective panicle, seed setting rate between Structural compensation effect is greater than the Ganxin 206 grains per panicle; the five Feng excellent T025 effective panicles structure compensation effect between grain weight greater than Changyou 10. The early rice varieties Ganxin 203 and late rice varieties Ng Fung excellent T025 by density thinning treatment conditions, the dry matter weight, single stem substance weight, leaf area index, specific leaf weight, chlorophyll SPAD value, the number of primary branches, secondary branch compensation effect is stronger. Hormones: ABA content: four varieties of the control and treatment of ABA content over growth period showed an upward trend, the rate of rise of early rice varieties Ganxin 206 rice varieties Changyou 10. ZR content: four varieties of the control and treatment of ZR content first increased and then a downward trend over growth period. Increase in Rice Ganxin 206 the rice varieties Ng Fung excellent T025, a decrease in Rice of Ganxin 206 and late rice varieties Changyou 10. IAA content: four varieties of the control and treatment of IAA content first increased and then a downward trend over growth period. Increase in Rice of Ganxin 206 and the rice varieties Changyou 10 the large decline early rice varieties Ganxin 206 rice varieties Five Fengyou T025. The GA content: four varieties of the control and treatment of GA content first increased and then a downward trend over growth period. Ganxin 206, rise early rice varieties and rice varieties Ng Fung excellent T025, the decrease in Rice Ganxin 206 and late rice varieties Ng Fung excellent T025. Compensation effect between hormone Ganxin 206 and five Fengyou T025 compared to of Ganxin 203 and Chang excellent 10.

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