영남평야지에서 벼 이앙시기에 따른 도정특성 변화와 도정특성 유망 유전자원 탐색 (Changes of Milling Quality of Rice Varieties According to the Transplanting Time and Good Resources with High Milling Quality in Yeongnam Plain Paddy)

서지정보

· 발행기관 : 한국작물학회
· 수록지 정보 : 한국작물학회지 / 53권 / 1 ~ 8페이지
· 저자명 : 김춘송, 이종희, 곽도연, 전명기, 강종래, 여운상, 신문식, 오병근

초록

We carried out this study to analyze changes
of rice grain milling properties according to the transplanting
time and to identify genetic resources suitable for
improving milling quality of rice in paddy field of Yeongnam
area. We analyzed grain filling and milling quality of
30 rice varieties. In late transplanting (June 20), heading
date was delayed for 6 days, compared to normal transplanting
(June 5). The grain filling ratio (GFR), perfect
kernel ratio of milled rice (PKR), and head rice recovery
(HRR) were improved in late transplanting. There was no
significant difference in head rice yield of two transplanting
time, even though the milled rice yield in late transplanting
was significantly smaller than that in normal transplanting
because of the reduction of spikelet numbers per
panicle. The uniformity of brown rice grain measured by
selection sieve norm was improve in late transplanting.
There was no significant difference of milling loss ratio
between normal and late transplanting but there was a trend
for a increase of milling necessary time in late transplanting.
Thus, our result suggest that optimum transplanting time
is June 10 to 15 to improve grain filling and milling quality
and produce high head rice yield in the southern paddy
plain of Yeongnam region. We selected promising 9 rice
varieties which are Nampyeongbyeo, Ilmibyeo, Chucheongbyeo,
Dongjinbyeo, Hopyeongbyeo, Malguemi, Chilbo, Hinohikari,
and Cheongmu having high percentage of ripened grain
and milling quality as genetic resources to improve milling
characteristics of rice varieties. Chucheongbyeo, Dongjinbyeo,
and Malguemi showed the highest grain filling ratio and
Nampyeongbyeo had the highest perfect kernel ratio. Nampyeongbyeo
and Ilmibyeo showed the highest head rice
yield with more than 500 kg/10a.

영어초록

We carried out this study to analyze changes
of rice grain milling properties according to the transplanting
time and to identify genetic resources suitable for
improving milling quality of rice in paddy field of Yeongnam
area. We analyzed grain filling and milling quality of
30 rice varieties. In late transplanting (June 20), heading
date was delayed for 6 days, compared to normal transplanting
(June 5). The grain filling ratio (GFR), perfect
kernel ratio of milled rice (PKR), and head rice recovery
(HRR) were improved in late transplanting. There was no
significant difference in head rice yield of two transplanting
time, even though the milled rice yield in late transplanting
was significantly smaller than that in normal transplanting
because of the reduction of spikelet numbers per
panicle. The uniformity of brown rice grain measured by
selection sieve norm was improve in late transplanting.
There was no significant difference of milling loss ratio
between normal and late transplanting but there was a trend
for a increase of milling necessary time in late transplanting.
Thus, our result suggest that optimum transplanting time
is June 10 to 15 to improve grain filling and milling quality
and produce high head rice yield in the southern paddy
plain of Yeongnam region. We selected promising 9 rice
varieties which are Nampyeongbyeo, Ilmibyeo, Chucheongbyeo,
Dongjinbyeo, Hopyeongbyeo, Malguemi, Chilbo, Hinohikari,
and Cheongmu having high percentage of ripened grain
and milling quality as genetic resources to improve milling
characteristics of rice varieties. Chucheongbyeo, Dongjinbyeo,
and Malguemi showed the highest grain filling ratio and
Nampyeongbyeo had the highest perfect kernel ratio. Nampyeongbyeo
and Ilmibyeo showed the highest head rice
yield with more than 500 kg/10a.

참고자료

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