农业现代化研究
農業現代化研究
농업현대화연구
RESEARCH OF AGRICULTURAL MODERNIZATION
2010年
2期
212-215
,共4页
杂交稻%外观品质性状%遗传%垩白度%粒长%粒宽
雜交稻%外觀品質性狀%遺傳%堊白度%粒長%粒寬
잡교도%외관품질성상%유전%성백도%립장%립관
hybrid rice%appearance quality%genetic%chalkiness degree%grain length,grain width
用IR75589-31S、IR60、IR70和90个籼粳成分不同的株系进行不完全双列杂交,以获得的270个杂交组合为材料,对杂交稻米外观品质遗传及性状问的相关进行了研究.结果表明:垩白度、粒长、粒宽及粒长宽比间的相关系数均达极显著水平,粒长、粒长宽比与垩白度呈显著负相关,粒宽与垩白度显著正相关;粒长、粒宽和粒长宽比对垩白度的直接通径系数分别为-1.9409、2.1738和2.7805.杂交稻外观品质性状主要受遗传控制且遗传效应均以加性效应为主.粒长、粒宽和粒长宽比以种子加性效应为主,母体效应也起到一定的作用,垩白度主要受到种子效应和母体效应控制,同时还受到细胞质的影响.粒长、粒宽和粒长宽比三性状的狭义遗传率都在80%以上,其中以粒宽为最高,达89.90%,垩白度的遗传率相对较低,为72.94%.
用IR75589-31S、IR60、IR70和90箇秈粳成分不同的株繫進行不完全雙列雜交,以穫得的270箇雜交組閤為材料,對雜交稻米外觀品質遺傳及性狀問的相關進行瞭研究.結果錶明:堊白度、粒長、粒寬及粒長寬比間的相關繫數均達極顯著水平,粒長、粒長寬比與堊白度呈顯著負相關,粒寬與堊白度顯著正相關;粒長、粒寬和粒長寬比對堊白度的直接通徑繫數分彆為-1.9409、2.1738和2.7805.雜交稻外觀品質性狀主要受遺傳控製且遺傳效應均以加性效應為主.粒長、粒寬和粒長寬比以種子加性效應為主,母體效應也起到一定的作用,堊白度主要受到種子效應和母體效應控製,同時還受到細胞質的影響.粒長、粒寬和粒長寬比三性狀的狹義遺傳率都在80%以上,其中以粒寬為最高,達89.90%,堊白度的遺傳率相對較低,為72.94%.
용IR75589-31S、IR60、IR70화90개선갱성분불동적주계진행불완전쌍렬잡교,이획득적270개잡교조합위재료,대잡교도미외관품질유전급성상문적상관진행료연구.결과표명:성백도、립장、립관급립장관비간적상관계수균체겁현저수평,립장、립장관비여성백도정현저부상관,립관여성백도현저정상관;립장、립관화립장관비대성백도적직접통경계수분별위-1.9409、2.1738화2.7805.잡교도외관품질성상주요수유전공제차유전효응균이가성효응위주.립장、립관화립장관비이충자가성효응위주,모체효응야기도일정적작용,성백도주요수도충자효응화모체효응공제,동시환수도세포질적영향.립장、립관화립장관비삼성상적협의유전솔도재80%이상,기중이립관위최고,체89.90%,성백도적유전솔상대교저,위72.94%.
In this paper, the genetic and correlation of rice grain appearance quality traits of grain iength(GL), grain width (GW), grain length/width ratio(LWR)and chalkiness degree(CD)was studied. Three female including IR75589-31 S, IR60, IR70 and ninety recombinant inbred lines or advanced backcrossing introgression lines with different indica-japonica degrees were used to make incomplete diallel crosses. Correlation analyses revealed different relationship among the four characters. CD was significantly and negatively correlated with GL (R = -0.5628~(**)) and LWR (R=-0.7498~(**)), but positively correlated with GW(R =0.7539~(**)). Path analysis showed that magnitudes of direction from GL, GW and LWR to CD were -1.9409, 2.1738 and 2.7805, respectively. The results also indicated that all appearance quality traits were mainly influenced by directively additive variance(V_A) and maternally additive variance((V_(Am)). GL, GW and LWR were controlled mainly by directive effects and less by maternally additive effects. On the other hand, CD was mainly controlled by direct additive and maternal additive effects. GL, GW and LWR had very high narrow sense heritability values (86.03%, 89.90% and 83.78%, respectively) while CD had relatively lower narrow sense heritability (72.94%). The results indicated that the appearance quality traits were mainly influenced by V_A and V_(Am).
