(Ch inese J R ice S ci) 2001 15 (1) : 29 4 1 1 2 1 ( 1 2 210095; 212400; 10009; ) Studies on Pho to syn thetic R ate and Function D u ration of R ice Germ p lasm R esou rces CAO Shu2qing 1 ZHA IH u2qu 1 YAN G Tu2nan 2 ZHAN G Rong2xian 1 KUAN G T ing2yun ( 1 A g ronomy D ep artm ent N anj ing A g ricu ltu ral U niversity N anj ing 210095 Ch ina; 212400 J iangsu P rov ince China; Institute of B otany Chinese A cademy of S ciences B eij ing 10009 China; 2 Z henj iang A g ricultural S cience Institute Z henj iang Corresp ord ing author) Abstract: Two hundred and thirty rice germp lasm resources w ere used to analyse their pho to synthetic rates (P n ) and function duration (RSP). The results show ed that the variation coefficient of P n and RSP of individuals w ithin a rice variety w as 210% - 11. 0% and. 5% - 9. 5% but it w as 11. 1% and 11. 2% among rice varieties respectively. A nalysis of statis2 tics w ith experim ental results show ed that the difference of P n and RSP among rice varieties w as significant at 1% level but no t betw een indica and japonica rice. The num bers of indica rice w ith high P n and japonica rice w ith long RSP w ere relatively mo re. A cco rding to the clustering results 42 rice varieties w ere separated into three group s i. e. high m iddle and low of P n and RSP respectively. into 4 quadrants. Two dim ension compo sito r w as m ade in rice varieties fo r P n and RSP and this coo rdinate w as divided The distribution frequency of indica and japonica rice varieties w as the highest in the second and first quad2 rant respectively. Som e rice varieties regarded as special pho to synthesis resources w ere screened out such as Xieyou 908 L unhui 422 W uyujing 8 N PT Shanyou 129. They m ight be used to op tim ize rice cro ssing and study pho to synthesis heredity imp roving in rice. Key words: pho to synthetic rate; pho to synthetic function duration; germp lasm resource; rice : 20 2. 0% 11. 0%. 5% 9. 5% 11. 1% 11. 2% 42 4 g I. 4%. % 4 908 422 8 N PT 129 : ; ; ; : Q 945; S5111024; S511101 : A : 100127216 (2001) 0120029206 : 2000202208; : 2000204224 : (G1998010100) ; : (1966- )
0 15 1 (2001 1 ) 1. 2. 2 1 SPAD 2502 80% 2 (R elative steady phase of ch lo rophyll content R SP) 7 O hno 4 8 5 6 28 1. 2. ; 9 2 1 1. 1 s) 17. 9 29. 6 Λmo lg(m 2 s) 1999 0. 7 ( 12A ) 20 ( O ry z a sa tiva L. ) 2. 4 Λmo lg(m 2 s) 42 20. 26. 6 Λmo lg(m 2 s) 17. 9 29. 6 ( 1) 21 21 28. 6% 5 6 17 cm 2. 8% 20 cm 0 1 ( 2) 1. 2 1. 2. 1 BAU 64. % 0. 6 2. 6 Λmo lg CO 2 0 50 ΛL gl (PFD ) (m 2 s) 2. 6 Λmo lg(m 2 s) 1200 Λmo lg(m 2 s) (2 ) ( 22A ) ( ) 2. 0% 11. 0% : (1) 11. 1% ( 22B ) (2) 8: 0 10: 0 5 2. 1 ( 1) ( CO 2 ) 2. 4 Λmo lg(m 2 O hno 4 5 Λmo lg(m 2 s) ( 1) 2. 2 () 5. 7 d 28. 44. 6 d 0. 6
: 1 1 Table 1. The values of photosynthetic rate of r ice germplasm resourceṡ Indica rice P ng(λmo l m - 2 s - 1 ) Japonica rice P ng(λmo l m - 2 s - 1 ) Teqing 2. 8 2. 4 10. 1 Kinm aze 20. 8 1. 1 5. 2 Guichao 2 21. 9 1. 2 5. 5 1 Zhendao 1 21. 9 0. 4 1. 9 6 M inghui 6 22. 7 1. 8 7. 9 Suxiejing 21. 1 1. 4 6. 6 R eakyeng 21. 9 0. 1. 4 Baxiludao 21. 1 1. 5 7. 1 1 Taiying 1 21. 7 1. 9 8. 8 N PT 17. 9 0. 9 5. 0 559 Yanhui 559 22. 8 2. 5 10. 9 2 Yanjing 2 21. 8 1. 8 8. 129 Zhenhui 129 2. 9. 2 1. 4 W uyujing 2. 6 2. 2 9. R 47 2. 5 2. 6 11. 1 88 Zhendao 88 26. 9. 9 14. 5 129 Shanyou 129 21. 1. 5 7. 0 4 Zhendao 4 21. 2 2. 4 11. 559 Shanyou 559 2. 0 2. 7 11. 5 Zhenxiangjing 5 21. 6 2. 7 12. 5 084 Shanyou 084 2. 5 1. 9 8. 1 4 Chuangui 4 18. 9 1. 7 8. 9 129 X ieyou 129 24. 0 2. 7 11. 9 Shidao 9 2. 6. 7 15. 7 908 X ieyou 908 26. 5 5. 1 19. 2 8 W uyujing 8 28. 0. 7 1. 2 g 162 g you 162 24. 9 2. 7 10. 8 26 O u 26 28. 6 1. 1. 8 419 X ieyou 419 25. 2 2. 9. 1 418 25.. 5 1. 8 g 129 g you 129 26. 6 2. 5 9. 4 12 21. 9 4. 0 18. 6 Shanyou 6 2. 5 2. 1 8. 9 Hexi 19. 9 1. 2 6. 0 249 Green 249 25. 6 1. 7 6. 6 422 L unhui 422 29. 6 1. 1. 7 4 Yangdao 4 21. 9. 8 17. 4 9727 25. 9 2. 8 10. 8 96 Zhenxian 96 22. 6 2. 4 10. 6 418 Shiyou 418 26.. 12. 5 IR 8 20. 1. 9 9. 4 C418 25. 4 2. 8 11. 0 A verage of indica rice 2. 4 1. 7 7. A verage of japonica rice 2. 4. 14. 1 A verage 2. 4 2. 6 11. 1 P n- Pho to synthetic rate. 2 Table 2. Var iance of leaf photosynthetic rate and active photosynthesis function duration among r ice var ietieṡ Item P n R SP RSP - Source of variance S S d f M S F F value Among varieties 818. 20 41 19. 96 2. 11 W ithin a variety 79. 81 84 9. 45 To tal 1612. 01 125 Among varieties 1967. 91 41 47. 99. 61 Pho to synthetic function duration. W ithin a variety 1116. 6 84 1. 29 To tal 084. 27 125 ( 12B ) 4. 9 d 61 d 29. 5 44. 2 d 28. 44. 6 d 1. 2. 6 d t 4. 0 d ( 22C). 5% 19. 0% 915% 11. 2% ( 22 28. 6% D ) 517 d 2 2.
2 15 1 (2001 1 ) ( 4) 42 : 25. 9 Λmo lg(m 2 s) 19105% ; 21. 9 25. 6 Λmo lg(m 2 s) 59. 52% ; 21. Λmo lg(m 2 s) 21. 4% 9. 6 d 19. 05% ;. 5 9. 1 d 54. 76% ; 2. 8 d 26. 19% ( ) 4 ( ) I: ; g : ; g : ; g : 1 F ig. 1. D istribution frequency of P n and RSP in rice germp lasm g g 5214% resources. 4218% g g Table. The values of photosynthetic function duration of r ice germplasm resourceṡ Indica rice R SPgd Japonica rice Teqing 9. 2. 5 6. 4 Kinm aze 0. 9 2. 1 6. 8 2 Guichao 2 5. 6 1. 8 5. 1 1 Zhendao 1 29. 5 1. 1. 7 6 M inghui 6 6. 1. 2 8. 9 Suxiejing 0. 7. 5 11. 4 R eakyeng 5. 1. 9 5. 4 Baxiludao 0. 1 1. 8 5. 9 1 Taiying 1 6. 9 2. 7 7. N PT 28. 1. 9 6. 7 559 Yanhui 559 6. 5. 5 9. 6 2 Yanjing 2 9. 6. 5 8. 8 129 Zhenhui 129 5. 7 2. 1 5. 9 W uyujing 5. 2. 2 6. 2 R 47 42. 2 1. 4. 4 88 Zhendao 88 9. 9. 4 8. 5 129 Shanyou 129 40. 1 2. 7 6. 7 4 Zhendao 4 7. 4 2. 8 7. 5 559 Shanyou 559 2. 4 1. 7 5. 2 5 Zhenxiangjing 5 9. 2 4. 10. 7 084 Shanyou 084. 5 1. 5 4. 5 4 Chuangui 4 4. 5 2. 0 5. 7 129 X ieyou 129 2. 8 2. 6 7. 9 9 Shidao 9 40. 1 2. 6 6. 5 908 X ieyou 908 2. 2 2. 4 7. 5 8 W uyujing 8 7. 6 2. 5 6. 6 g 162 g you 162 4. 4 2. 1 6. 1 26 O u 26 5. 4 2. 6. 5 419 X ieyou 419 1. 9 1. 8 5. 6 418 9. 1 2. 6 6. 6 R SPgd g 129 g you 129 9. 0 2. 4 6. 2 12 6. 9 1. 9 5. 1 6 Shanyou 6 4. 9 1. 5 4. Hexi. 7 1. 8 5. 249 Green 249 5. 5 1. 4. 9 422 L unhui 422 44. 6 2. 5 5. 6 4 Yandao 4 29. 5 2. 7 9. 2 9727 42. 5. 8 8. 9 96 Zhenxian 96 0. 6 2. 4 7. 9 418 Shiyou 418 40. 1 2. 4 5. 9 IR 8 0. 5. 7 12. 1 C418 8. 9 1. 9 4. 9 A verage of indica rice 4. 9. 9. 5 A verage of japonica rice 6. 4. 5 12. 4 A verage 5. 7 4. 0 11. 2
: 4 Table 4. Classif ication on Pn and RSP in r ice germplasm resourceṡ P ng(λmo l m - 2 s - 1 ) ; R SPgd Pho to synthetic N um ber of D istribution Type trait varieties frequencyg% A verage w ithin group R ange P n H igh 8 19. 05 27. 25. 9 29. 6 M iddle 25 59. 52 2. 2 21. 9 25. 6 Low 9 21. 4 20. 17. 9 21. R SP Long 8 19. 05 41. 9 9. 6 44. 6 M iddle 2 54. 76 6.. 5 9. 1 Sho rt 11 26. 19 0. 8 28. 2. 8 810% 6119% N PT 129 908 422 8 F ig.. Two dim ension compo sito r of P n and RSP in rice germp lasm resources. 2 1-908; 2-6; - ; 4-8 ; 5- g 129; 6-422; 7- N PT; 8-129 1 - Xieyou 908; 2 - Shanyou 6; - W uyujing ; 4 - F ig. 2. D istribution frequency on standard difference and CV of P n and RSP in rice germp lasm resources. W uyujing 8; Shanyou 129. 5 - g you 129; 6 - L unhui 422; 7 - N PT; 8 -
4 15 1 (2001 1 ) 6 : ( 1. [J. 1997 12 (6) : 1 6 ) 2. 2 [J. 1991 (1) : 5 9. [J. g 4 O hno. g 12 80% 1995112 144 M o ss 10 Good 11 Giffo rd 12 N elson 1 Evans 14 6 g 129 8 g 129 8 6 10% 15% ( ) 6 g g 129 8 I ( ) 15 1990 11 (2) : 11 15 16 16 V arietal differences of pho to synthetic efficiency and dry m atter p roduction in indica rice [J. T ro A g ri 1976 5: 115 5. [J. 1978 4 (2) : 11 120 6. [M. : 7. [J. 1992 15: 76 86 8. [J. 1999 22 () : 250 260 9. [M. : 19911188 195 10 M o ss D N. Studies on increasing pho to synthesis in crop p lants [A. In: Burris R H B lack C C. CO 2M etabo lism and P lant P ro2 ductivity[m. Baltimo re: U niversity Park P ress 1976. 1 11 Good N E Bell D H. Pho to synthesis p lant p roductivity and crop yield[a. In: Caarlson P S. The B io logy of C rop P roductivi2 ty[m. N ew Yo rk: A cadem ic P ress 1980. 12 Giffo rd R M. Barries to increasing crop p roductivity by genetic imp rovem ent in pho to synthesis [A. In: B iggins J. P rogress in Pho to synthesis Research Vo l. g [C. Do rdrecht: M artinus N i2 jhoff Publishers 1987. 7 1 N elson C J A say K H Ho rst G L et al. Genetic association be2 tw een pho to synthetic characteristics and yield: review of the evi2 dence[j. P lant P hy siol B iochem 1988 26: 54 14 Evans L T. F rom leaf pho to synthesis to crop p roductivity [A. In: M urata N. Research in Pho to synthesis Vo l. g [M. Do r2 drecht: Kluw er A cadem ic Publishers 1992. 587 15. [C. : 1994. 17 2 1980. 1 2. (1) [C. :