Different Responses to N⁺ Beam Implantation Between Diploid and Autotetraploid Rice
2013
Yang, Pengming | Huang, Qunce | Qin, Guangyong | Zhao, Shuaipeng
The objective of the study is to investigate the biological effects of N⁺ beam implantation in different ploidy rice. N⁺ beam implantation had increase effect in tillers number, spikelet fertility, grain yield per plant, si-phellem cell size, photosynthetic rate, transpiration rate, flag leaf dry weight, flag leaf culm dry weight, stomatal length, vascular bundle area, and protein and starch content and decrease effect in 1,000-grain weight, stomatal width and chlorophyll, calcium, sodium, and zinc content for all rice lines. N⁺ beam implantation had opposite effect on diploid and autotetraploid rice lines in vascular bundle area, stomatal complexes areas, epidermal cell size, era length, area of air spaces, midrib length, papilla number, flag leaf length, flag leaf width, flag leaf area, and cadmium, copper, ferrum, magnesium and phosphorus content. Twenty traits of diploid line and ten traits of autotetraploid line are significantly increased by N⁺ beam in this experiment, ranging from 6.8 to 362.7 % in diploid line and 7.9 to 131.7 % in autotetraploid line. Six traits of diploid lines and 15 traits of autotetraploid line are significantly decreased by N⁺ beam implantation in this experiment, ranging from 8.9 to 87.4 % in diploid line and 5.6 to 88.5 % in autotetraploid line.
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